//Function which returns the base url as defined in main settings (as stored in an input tag)
function getBaseUrl(callback)
{
	if(domElementExists("span#base_url"))
	{
		config_base_url = $("span#base_url").attr('innerHTML');
		callback(config_base_url);	
	}
	else
	{
		callback(false);
	}
}



function trim (str, charlist) 
{
    // http://kevin.vanzonneveld.net
    // +   original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: mdsjack (http://www.mdsjack.bo.it)
    // +   improved by: Alexander Ermolaev (http://snippets.dzone.com/user/AlexanderErmolaev)
    // +      input by: Erkekjetter
    // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +      input by: DxGx
    // +   improved by: Steven Levithan (http://blog.stevenlevithan.com)
    // +    tweaked by: Jack
    // +   bugfixed by: Onno Marsman

 
    var whitespace, l = 0, i = 0;
    str += '';
    
    if (!charlist) {
        // default list
        whitespace = " \n\r\t\f\x0b\xa0\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u200b\u2028\u2029\u3000";
    } else {
        // preg_quote custom list
        charlist += '';
        whitespace = charlist.replace(/([\[\]\(\)\.\?\/\*\{\}\+\$\^\:])/g, '\$1');
    }
    
    l = str.length;
    for (i = 0; i < l; i++) {
        if (whitespace.indexOf(str.charAt(i)) === -1) {
            str = str.substring(i);
            break;
        }
    }
    
    l = str.length;
    for (i = l - 1; i >= 0; i--) {
        if (whitespace.indexOf(str.charAt(i)) === -1) {
            str = str.substring(0, i + 1);
            break;
        }
    }
    
    return whitespace.indexOf(str.charAt(0)) === -1 ? str : '';
}




function strpos( haystack, needle, offset)
{
	
	var i = (haystack+'').indexOf( needle, offset ); 
	return i;
}


function is_numeric( mixed_var ) {
    // http://kevin.vanzonneveld.net
    // +   original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: David
    // +   improved by: taith

 
    return !isNaN(mixed_var * 1);
}


function substr( f_string, f_start, f_length ) {
    // http://kevin.vanzonneveld.net
    // +     original by: Martijn Wieringa
    // +     bugfixed by: T.Wild
    // +      tweaked by: Onno Marsman
    f_string += '';
 
    if(f_start < 0) {
        f_start += f_string.length;
    }
 
    if(f_length == undefined) {
        f_length = f_string.length;
    } else if(f_length < 0){
        f_length += f_string.length;
    } else {
        f_length += f_start;
    }
 
    if(f_length < f_start) {
        f_length = f_start;
    }
 
    return f_string.substring(f_start, f_length);
}



function isdefined( variable)
{
	

	//JavaScript Document
	/*
	// ///////////////////////////
	// isdefined v1.0
	// 
	// Check if a javascript variable has been defined.
	// 
	// Author : Jehiah Czebotar
	// Website: http://www.jehiah.com
	// Usage  : alert(isdefined('myvar'));
	// ///////////////////////////
	*/
    return (typeof(window[variable]) == "undefined")?  false: true;
}

function explode( delimiter, string, limit ) {
    // http://kevin.vanzonneveld.net
    // +     original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +     improved by: kenneth
    // +     improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +     improved by: d3x
    // +     bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // *     example 1: explode(' ', 'Kevin van Zonneveld');
    // *     returns 1: {0: 'Kevin', 1: 'van', 2: 'Zonneveld'}
    // *     example 2: explode('=', 'a=bc=d', 2);
    // *     returns 2: ['a', 'bc=d']
 
    var emptyArray = { 0: '' };
    
    // third argument is not required
    if ( arguments.length < 2
        || typeof arguments[0] == 'undefined'
        || typeof arguments[1] == 'undefined' )
    {
        return null;
    }
 
    if ( delimiter === ''
        || delimiter === false
        || delimiter === null )
    {
        return false;
    }
 
    if ( typeof delimiter == 'function'
        || typeof delimiter == 'object'
        || typeof string == 'function'
        || typeof string == 'object' )
    {
        return emptyArray;
    }
 
    if ( delimiter === true ) {
        delimiter = '1';
    }
    
    if (!limit) {
        return string.toString().split(delimiter.toString());
    } else {
        // support for limit argument
        var splitted = string.toString().split(delimiter.toString());
        var partA = splitted.splice(0, limit - 1);
        var partB = splitted.join(delimiter.toString());
        partA.push(partB);
        return partA;
    }
	
}
		

			
function setSelectedIndex(id, valsearch)
{
	if(domElementExists('select#'+id))			
		($('select#'+id)[0]).selectedIndex = valsearch;
}


function selectByValue(id,val)
{
	if(domElementExists('select#'+id))
		$('select#'+id).val(val); 
}

function isDayLightApplicable() 
{
	var rightNow = new Date();
	var jan1 = new Date(rightNow.getFullYear(), 0, 1, 0, 0, 0, 0);
	var temp = jan1.toGMTString();
	var jan2 = new Date(temp.substring(0, temp.lastIndexOf(" ")-1));
	var std_time_offset = (jan1 - jan2) / (1000 * 60 * 60);
	
	
	
			
	var june1 = new Date(rightNow.getFullYear(), 6, 1, 0, 0, 0, 0);
	temp = june1.toGMTString();
	var june2 = new Date(temp.substring(0, temp.lastIndexOf(" ")-1));
	var daylight_time_offset = (june1 - june2) / (1000 * 60 * 60);
	var dst;
	if (std_time_offset == daylight_time_offset) 
	{
	    dst = false; // daylight savings time is NOT observed
	} 
	else 
	{
	    dst = true; // daylight savings time is observed
	}
	
	return dst;
}


//Function to return the lowest value of a dropdown - Sandeepan <sandeepan@adpsconsulting.com>
function getRangeOfVal(id)
{
	var dd = $('#'+id);
	var optionList = $('option', dd);
	
	//Initialize 
	var temp =["",""];
	optionList.each(function()
	{
		if((temp[0] == "") && (temp[1] == ""))
		{
			temp[0]= temp[1]=$(this).val();
			
		}
		else{
			if(($(this).val()) < temp){
				temp[0]= $(this).val();
			}
			if(($(this).val()) > temp){
				temp[1]= $(this).val();
			}
		}
	});
	
	return temp;
}

function intval( mixed_var, base ) {
    // http://kevin.vanzonneveld.net
    // +   original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: stensi
    // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // *     example 1: intval('Kevin van Zonneveld');
    // *     returns 1: 0
    // *     example 2: intval(4.2);
    // *     returns 2: 4
    // *     example 3: intval(42, 8);
    // *     returns 3: 42
    // *     example 4: intval('09');
    // *     returns 4: 9
 
    var tmp;
 
    var type = typeof( mixed_var );
 
    if(type == 'boolean'){
        if (mixed_var == true) {
            return 1;
        } else {
            return 0;
        }
    } else if(type == 'string'){
        tmp = parseInt(mixed_var * 1, 10);
        if(isNaN(tmp) || !isFinite(tmp)){
            return 0;
        } else{
            return tmp.toString(base || 10);
        }
    } else if(type == 'number' && isFinite(mixed_var) ){
        return Math.floor(mixed_var);
    } else{
        return 0;
    }
}


//function to prefill subject field while replying to a comment
function replyToComment(id_comment, subject_comment){
	
	$('#reply').val(id_comment);
	$('form#comment_form input#subject_text').val(subject_comment);
}



function str_replace (search, replace, subject, count) 
{
	
	
    // http://kevin.vanzonneveld.net
    // +   original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: Gabriel Paderni
    // +   improved by: Philip Peterson
    // +   improved by: Simon Willison (http://simonwillison.net)
    // +    revised by: Jonas Raoni Soares Silva (http://www.jsfromhell.com)
    // +   bugfixed by: Anton Ongson
    // +      input by: Onno Marsman
    // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +    tweaked by: Onno Marsman
    // +      input by: Brett Zamir (http://brett-zamir.me)
    // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   input by: Oleg Eremeev
    // +   improved by: Brett Zamir (http://brett-zamir.me)
    // +   bugfixed by: Oleg Eremeev
    // %          note 1: The count parameter must be passed as a string in order
    // %          note 1:  to find a global variable in which the result will be given
    // *     example 1: str_replace(' ', '.', 'Kevin van Zonneveld');
    // *     returns 1: 'Kevin.van.Zonneveld'
    // *     example 2: str_replace(['{name}', 'l'], ['hello', 'm'], '{name}, lars');
    // *     returns 2: 'hemmo, mars'
 
    var i = 0, j = 0, temp = '', repl = '', sl = 0, fl = 0,
            f = [].concat(search),
            r = [].concat(replace),
            s = subject,
            ra = r instanceof Array, sa = s instanceof Array;
    s = [].concat(s);
    if (count) {
        this.window[count] = 0;
    }
 
    for (i=0, sl=s.length; i < sl; i++) {
        if (s[i] === '') {
            continue;
        }
        for (j=0, fl=f.length; j < fl; j++) {
            temp = s[i]+'';
            repl = ra ? (r[j] !== undefined ? r[j] : '') : r[0];
            s[i] = (temp).split(f[j]).join(repl);
            if (count && s[i] !== temp) {
                this.window[count] += (temp.length-s[i].length)/f[j].length;}
        }
    }
    
   /* if(sa)
    	alert(s)
    else
    	alert(s[0])
    */	
    return sa ? s : s[0];
}

function validateComment(id) 
{
	if($('input#disp_name_').val()=='')
	{
		$('span#disp_name').css('display', 'block');
		return false;
	}
	else if($('input#subject_').val()=='')
	{
		$('span#error_name_').css('display', 'block');
		return false;
	}
	else if($('textarea#message_').val()=='')
	{
		$('span#error_message_').css('display', 'block');
		return false;
	}
	else
	{ //Validation passed - dissappear the popup
		closeMessageBox('commentPopup'+id);
		displayLoadIndicator();
	}
	
	

}



function closeMessageBox(id) 
{
	$('div#'+id).css('display', 'none');
}



function gmdate (format, timestamp) {
	//alert("in")
    // http://kevin.vanzonneveld.net
    // +   original by: Brett Zamir (http://brett-zamir.me)
    // -    depends on: date
    // *     example 1: gmdate('H:m:s \\m \\i\\s \\m\\o\\n\\t\\h', 1062402400); // Return will depend on your timezone
    // *     returns 1: '07:09:40 m is month'
    var dt = ((typeof(timestamp) == 'undefined') ? new Date() : // Not provided
        (typeof(timestamp) == 'number') ? new Date(timestamp*1000) : // UNIX timestamp
        new Date(timestamp));
    timestamp = Date.parse(dt.toUTCString().slice(0, -4))/1000;
    return this.date(format, timestamp);
}


function date ( format, timestamp ) {
    // http://kevin.vanzonneveld.net
    // +   original by: Carlos R. L. Rodrigues (http://www.jsfromhell.com)
    // +      parts by: Peter-Paul Koch (http://www.quirksmode.org/js/beat.html)
    // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: MeEtc (http://yass.meetcweb.com)
    // +   improved by: Brad Touesnard
    // +   improved by: Tim Wiel
    // +   improved by: Bryan Elliott
    // +   improved by: Brett Zamir (http://brett-zamir.me)
    // +   improved by: David Randall
    // +      input by: Brett Zamir (http://brett-zamir.me)
    // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: Brett Zamir (http://brett-zamir.me)
    // +   improved by: Brett Zamir (http://brett-zamir.me)
    // +  derived from: gettimeofday
    // +      input by: majak
    // +   bugfixed by: majak
    // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // %        note 1: Uses global: php_js to store the default timezone
    // *     example 1: date('H:m:s \\m \\i\\s \\m\\o\\n\\t\\h', 1062402400);
    // *     returns 1: '09:09:40 m is month'
    // *     example 2: date('F j, Y, g:i a', 1062462400);
    // *     returns 2: 'September 2, 2003, 2:26 am'
    // *     example 3: date('Y W o', 1062462400);
    // *     returns 3: '2003 36 2003'
    // *     example 4: x = date('Y m d', (new Date()).getTime()/1000); // 2009 01 09
    // *     example 4: (x+'').length == 10
    // *     returns 4: true
    // *     example 5: date('W', 1104534000);
    // *     returns 5: '53'
    
    var that = this;
    var jsdate=(
        (typeof(timestamp) == 'undefined') ? new Date() : // Not provided
        (typeof(timestamp) == 'number') ? new Date(timestamp*1000) : // UNIX timestamp
        new Date(timestamp) // Javascript Date()
    ); // , tal=[]
    var pad = function (n, c){
        if ( (n = n + "").length < c ) {
            return new Array(++c - n.length).join("0") + n;
        } else {
            return n;
        }
    };
    var _dst = function (t) {
        // Calculate Daylight Saving Time (derived from gettimeofday() code)
        var dst=0;
        var jan1 = new Date(t.getFullYear(), 0, 1, 0, 0, 0, 0);  // jan 1st
        var june1 = new Date(t.getFullYear(), 6, 1, 0, 0, 0, 0); // june 1st
        var temp = jan1.toUTCString();
        var jan2 = new Date(temp.slice(0, temp.lastIndexOf(' ')-1));
        temp = june1.toUTCString();
        var june2 = new Date(temp.slice(0, temp.lastIndexOf(' ')-1));
        var std_time_offset = (jan1 - jan2) / (1000 * 60 * 60);
        var daylight_time_offset = (june1 - june2) / (1000 * 60 * 60);
 
        if (std_time_offset === daylight_time_offset) {
            dst = 0; // daylight savings time is NOT observed
        } else {
            // positive is southern, negative is northern hemisphere
            var hemisphere = std_time_offset - daylight_time_offset;
            if (hemisphere >= 0) {
                std_time_offset = daylight_time_offset;
            }
            dst = 1; // daylight savings time is observed
        }
        return dst;
    };
    var ret = '';
    var txt_weekdays = ["Sunday", "Monday", "Tuesday", "Wednesday",
        "Thursday", "Friday", "Saturday"];
    var txt_ordin = {1: "st", 2: "nd", 3: "rd", 21: "st", 22: "nd", 23: "rd", 31: "st"};
    var txt_months =  ["", "January", "February", "March", "April",
        "May", "June", "July", "August", "September", "October", "November",
        "December"];
 
    var f = {
        // Day
            d: function (){
                return pad(f.j(), 2);
            },
            D: function (){
                var t = f.l();
                return t.substr(0,3);
            },
            j: function (){
                return jsdate.getDate();
            },
            l: function (){
                return txt_weekdays[f.w()];
            },
            N: function (){
                //return f.w() + 1;
                return f.w() ? f.w() : 7;
            },
            S: function (){
                return txt_ordin[f.j()] ? txt_ordin[f.j()] : 'th';
            },
            w: function (){
                return jsdate.getDay();
            },
            z: function (){
                return (jsdate - new Date(jsdate.getFullYear() + "/1/1")) / 864e5 >> 0;
            },
 
        // Week
            W: function (){
 
                var a = f.z(), b = 364 + f.L() - a;
                var nd2, nd = (new Date(jsdate.getFullYear() + "/1/1").getDay() || 7) - 1;
 
                if (b <= 2 && ((jsdate.getDay() || 7) - 1) <= 2 - b){
                    return 1;
                } 
                if (a <= 2 && nd >= 4 && a >= (6 - nd)){
                    nd2 = new Date(jsdate.getFullYear() - 1 + "/12/31");
                    return that.date("W", Math.round(nd2.getTime()/1000));
                }
                
                var w = (1 + (nd <= 3 ? ((a + nd) / 7) : (a - (7 - nd)) / 7) >> 0);
 
                return (w ? w : 53);
            },
 
        // Month
            F: function (){
                return txt_months[f.n()];
            },
            m: function (){
                return pad(f.n(), 2);
            },
            M: function (){
                var t = f.F();
                return t.substr(0,3);
            },
            n: function (){
                return jsdate.getMonth() + 1;
            },
            t: function (){
                var n;
                if ( (n = jsdate.getMonth() + 1) == 2 ){
                    return 28 + f.L();
                }
                if ( n & 1 && n < 8 || !(n & 1) && n > 7 ){
                    return 31;
                }
                return 30;
            },
 
        // Year
            L: function (){
                var y = f.Y();
                return (!(y & 3) && (y % 1e2 || !(y % 4e2))) ? 1 : 0;
            },
            o: function (){
                if (f.n() === 12 && f.W() === 1) {
                    return jsdate.getFullYear()+1;
                }
                if (f.n() === 1 && f.W() >= 52) {
                    return jsdate.getFullYear()-1;
                }
                return jsdate.getFullYear();
            },
            Y: function (){
                return jsdate.getFullYear();
            },
            y: function (){
                return (jsdate.getFullYear() + "").slice(2);
            },
 
        // Time
            a: function (){
                return jsdate.getHours() > 11 ? "pm" : "am";
            },
            A: function (){
                return f.a().toUpperCase();
            },
            B: function (){
                // peter paul koch:
                var off = (jsdate.getTimezoneOffset() + 60)*60;
                var theSeconds = (jsdate.getHours() * 3600) +
                                 (jsdate.getMinutes() * 60) +
                                  jsdate.getSeconds() + off;
                var beat = Math.floor(theSeconds/86.4);
                if (beat > 1000) {
                    beat -= 1000;
                }
                if (beat < 0) {
                    beat += 1000;
                }
                if ((String(beat)).length == 1) {
                    beat = "00"+beat;
                }
                if ((String(beat)).length == 2) {
                    beat = "0"+beat;
                }
                return beat;
            },
            g: function (){
                return jsdate.getHours() % 12 || 12;
            },
            G: function (){
                return jsdate.getHours();
            },
            h: function (){
                return pad(f.g(), 2);
            },
            H: function (){
                return pad(jsdate.getHours(), 2);
            },
            i: function (){
                return pad(jsdate.getMinutes(), 2);
            },
            s: function (){
                return pad(jsdate.getSeconds(), 2);
            },
            u: function (){
                return pad(jsdate.getMilliseconds()*1000, 6);
            },
 
        // Timezone
            e: function () {
/*                var abbr='', i=0;
                if (this.php_js && this.php_js.default_timezone) {
                    return this.php_js.default_timezone;
                }
                if (!tal.length) {
                    tal = this.timezone_abbreviations_list();
                }
                for (abbr in tal) {
                    for (i=0; i < tal[abbr].length; i++) {
                        if (tal[abbr][i].offset === -jsdate.getTimezoneOffset()*60) {
                            return tal[abbr][i].timezone_id;
                        }
                    }
                }
*/
                return 'UTC';
            },
            I: function (){
                return _dst(jsdate);
            },
            O: function (){
               var t = pad(Math.abs(jsdate.getTimezoneOffset()/60*100), 4);
               t = (jsdate.getTimezoneOffset() > 0) ? "-"+t : "+"+t;
               return t;
            },
            P: function (){
                var O = f.O();
                return (O.substr(0, 3) + ":" + O.substr(3, 2));
            },
            T: function () {
/*                var abbr='', i=0;
                if (!tal.length) {
                    tal = that.timezone_abbreviations_list();
                }
                if (this.php_js && this.php_js.default_timezone) {
                    for (abbr in tal) {
                        for (i=0; i < tal[abbr].length; i++) {
                            if (tal[abbr][i].timezone_id === this.php_js.default_timezone) {
                                return abbr.toUpperCase();
                            }
                        }
                    }
                }
                for (abbr in tal) {
                    for (i=0; i < tal[abbr].length; i++) {
                        if (tal[abbr][i].offset === -jsdate.getTimezoneOffset()*60) {
                            return abbr.toUpperCase();
                        }
                    }
                }
*/
                return 'UTC';
            },
            Z: function (){
               return -jsdate.getTimezoneOffset()*60;
            },
 
        // Full Date/Time
            c: function (){
                return f.Y() + "-" + f.m() + "-" + f.d() + "T" + f.h() + ":" + f.i() + ":" + f.s() + f.P();
            },
            r: function (){
                return f.D()+', '+f.d()+' '+f.M()+' '+f.Y()+' '+f.H()+':'+f.i()+':'+f.s()+' '+f.O();
            },
            U: function (){
                return Math.round(jsdate.getTime()/1000);
            }
    };
 
    return format.replace(/[\\]?([a-zA-Z])/g, function (t, s){
        if ( t!=s ){
            // escaped
            ret = s;
        } else if (f[s]){
            // a date function exists
            ret = f[s]();
        } else {
            // nothing special
            ret = s;
        }
        return ret;
    });
}

function setActiveCountryCurrency(countryIso)
{
	getBaseUrl(function(baseUrl)
	{
		if(baseUrl)
		{
			$.post(baseUrl+"/ajax/sessionValueHandle", { operation: 'set_active_country_currency', country:countryIso },
			function(data) 
			{
				callback(timezone.timezoneId);
				alert(timezone.timezoneId);
			}, "json");
		}
	});
	
}

function setCountry(iso)
{  
	if(iso != null)
	{
		//Set input
		$("input#active_country").val(iso);
		//Submit form
		$("form#set_country_form").submit();
		
	}
}

function setCurrency(currencyCode)
{
	if(currencyCode != null)
	{
		//Set input
		$("input#active_currency").val(currencyCode);
		//Submit form
		$("form#set_currency_form").submit();
	}
	
}


//Following are JS browser detection codes
//Works for normal as well as tester IE 6
function isBrowserIE6()
{
	var ret = false;
	if(($.browser.msie) && (parseInt($.browser.version) == 6) && (!this.XMLHttpRequest))
	{
		ret = true;
	}
	return ret;
}


//Works for only normal IE 7 - but is unable to distinguish between IE tester IE 7 and 8
function isBrowserIE7()
{
	var ret = false;
	if(($.browser.msie) && ((parseInt($.browser.version) == 7) && (this.XMLHttpRequest)))
	{ //Modification because of IE tester IE7 being detected as IE6
		ret = true;
	}
	return ret;
}



function isBrowserIE()
{
	var ret = false;
	if($.browser.msie)
	{
		ret = true;
	}
	return ret;
}


function isBrowserChrome()
{
	var ret = false;
	var is_chrome = /chrome/.test( navigator.userAgent.toLowerCase());
	
	if(is_chrome)
	{
		ret = true;
	}
	return ret;
}




function isBrowserSafari()
{
	var ret = false;
	if($.browser.safari)
	{
		ret = true;
	}
	return ret;
}


function isBrowserOpera()
{
	var ret = false;
	var is_opera = /Opera/.test (navigator.userAgent);
	if(is_opera)
	{
		ret = true;
	}
	return ret;
}


function isbrowserMozilla()
{
	if($.browser.mozilla)
	{
		return true;
	}
	
	return false;
	
}


//Cannot be put in timezonepicker.js due to current architechture

function getDetectedTimezone(baseUrl,callback)
{
	
	x = new Date()
	var gmtOffset = -(stdTimezoneOffset()/60);
	
	if(isDayLightApplicable())
	{  //whether the timezone observes dst
		dstOffset = 1;
		
	}
	else
	{
		dstOffset = 0;
	}
	
	//Ajax call to map the detected values with one timezone from our table
	
	$.post(baseUrl+"/ajax/timezone", { operation: 'identify_timezone', gmtOffset: gmtOffset, dstOffset: dstOffset},
	function(timezone) 
	{
		callback(timezone.timezoneId);
	//	alert(timezone.timezoneId);
	}, "json");
	
}



//Sets the detected timezone in session - when user is not logged in
function setDetectedTimezone(baseUrl,callback)
{
	var returnVal = false;
	getDetectedTimezone(baseUrl, function(detectedTzId)
	{
		
		if(detectedTzId)
		{//Valid key
			
			$.post(baseUrl+"/ajax/timezone", { operation: 'get_timezone_details', 'timezone_id': detectedTzId},
			function(timezone) 
			{
				//Set timezone in session
				$.post(baseUrl+"/ajax/timezone", { operation: 'set_session_timezone', 'timezone_id': (timezone.timezone_id)},
				function(data) 
				{
				//Return the id of the set timezone
				returnVal = data.timezoneid;
				callback(returnVal);
				}, "json");
		
			}, "json");
			
		}
		
	});
	
	
	
}


//Cannot be put in timezonepicker.js due to current architechture
function stdTimezoneOffset() {

    var d = new Date();

    var jan = new Date(d.getFullYear(), 0, 1);

    var jul = new Date(d.getFullYear(), 6, 1);

    var wintertzo = jan.getTimezoneOffset();

    var summertzo = jul.getTimezoneOffset();



    var dstapplies;

    ( wintertzo != summertzo ) ? dstapplies = true : dstapplies = false;



    // get current date

    d = new Date();

    var tzo = d.getTimezoneOffset();



    if ( tzo == wintertzo ) {

        // In winter time just return the current tzo

        return tzo;

    }



    if ( tzo == summertzo ) {

        // In summer time...

        if ( dstapplies ) {

        // with DST first remove extra 60 minutes

        return tzo + 60;

        } else {

        // without DST just return tzo

        return tzo; 

        }

    }

}



function displayLoadIndicator()
{
	centerThisElement('#filterIndicator');
	$('#filterIndicator').css('display', 'block');
}

function hideLoadIndicator()
{
	$('#filterIndicator').css('display', 'none');
}



function decodeHtmlToParam(html)
{
	/*decodedHtml1 = str_replace('%__%', '"',html);
	decodedHtml2 = str_replace('%_%',"'",  decodedHtml1);
	decodedHtml = str_replace('%,%', ',', decodedHtml2); */
	decodedHtml = base64_decode(html);
	return decodedHtml;
	
}

function base64_decode (data) 
{
    // http://kevin.vanzonneveld.net
    // +   original by: Tyler Akins (http://rumkin.com)
    // +   improved by: Thunder.m
    // +      input by: Aman Gupta
    // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   bugfixed by: Onno Marsman
    // +   bugfixed by: Pellentesque Malesuada
    // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +      input by: Brett Zamir (http://brett-zamir.me)
    // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // -    depends on: utf8_decode
    // *     example 1: base64_decode('S2V2aW4gdmFuIFpvbm5ldmVsZA==');
    // *     returns 1: 'Kevin van Zonneveld'

    // mozilla has this native
    // - but breaks in 2.0.0.12!
    //if (typeof this.window['btoa'] == 'function') {
    //    return btoa(data);
    //}

    var b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
    var o1, o2, o3, h1, h2, h3, h4, bits, i = 0, ac = 0, dec = "", tmp_arr = [];

    if (!data) {
        return data;
    }

    data += '';

    do {  // unpack four hexets into three octets using index points in b64
        h1 = b64.indexOf(data.charAt(i++));
        h2 = b64.indexOf(data.charAt(i++));
        h3 = b64.indexOf(data.charAt(i++));
        h4 = b64.indexOf(data.charAt(i++));

        bits = h1<<18 | h2<<12 | h3<<6 | h4;

        o1 = bits>>16 & 0xff;
        o2 = bits>>8 & 0xff;
        o3 = bits & 0xff;

        if (h3 == 64) {
            tmp_arr[ac++] = String.fromCharCode(o1);
        } else if (h4 == 64) {
            tmp_arr[ac++] = String.fromCharCode(o1, o2);
        } else {
            tmp_arr[ac++] = String.fromCharCode(o1, o2, o3);
        }
    } while (i < data.length);

    dec = tmp_arr.join('');
    dec = this.utf8_decode(dec);

    return dec;
}

/**
 * @desc - checks if any dom element with this id exists in the current page
 * @param elementId
 * @return
 */
function domElementExists(elementId)
{
	if ($(elementId).length > 0 ) 
	{
		return true;
	}
	else
	{
		return false;
	}
}

function isset () 
{
    // http://kevin.vanzonneveld.net
    // +   original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: FremyCompany
    // +   improved by: Onno Marsman
    // *     example 1: isset( undefined, true);
    // *     returns 1: false
    // *     example 2: isset( 'Kevin van Zonneveld' );
    // *     returns 2: true
    
    var a=arguments, l=a.length, i=0;
    
    if (l===0) {
        throw new Error('Empty isset'); 
    }
    
    while (i!==l) {
        if (typeof(a[i])=='undefined' || a[i]===null) { 
            return false; 
        } else { 
            i++; 
        }
    }
    return true;
}


function unserialize (data) {
    // http://kevin.vanzonneveld.net
    // +     original by: Arpad Ray (mailto:arpad@php.net)
    // +     improved by: Pedro Tainha (http://www.pedrotainha.com)
    // +     bugfixed by: dptr1988
    // +      revised by: d3x
    // +     improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +        input by: Brett Zamir (http://brett-zamir.me)
    // +     improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +     improved by: Chris
    // +     improved by: James
    // +        input by: Martin (http://www.erlenwiese.de/)
    // +     bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +     improved by: Le Torbi
    // +     input by: kilops
    // +     bugfixed by: Brett Zamir (http://brett-zamir.me)
    // -      depends on: utf8_decode
    // %            note: We feel the main purpose of this function should be to ease the transport of data between php & js
    // %            note: Aiming for PHP-compatibility, we have to translate objects to arrays
    // *       example 1: unserialize('a:3:{i:0;s:5:"Kevin";i:1;s:3:"van";i:2;s:9:"Zonneveld";}');
    // *       returns 1: ['Kevin', 'van', 'Zonneveld']
    // *       example 2: unserialize('a:3:{s:9:"firstName";s:5:"Kevin";s:7:"midName";s:3:"van";s:7:"surName";s:9:"Zonneveld";}');
    // *       returns 2: {firstName: 'Kevin', midName: 'van', surName: 'Zonneveld'}

    var that = this;
    var utf8Overhead = function(chr) {
        // http://phpjs.org/functions/unserialize:571#comment_95906
        var code = chr.charCodeAt(0);
        if (code < 0x0080) {
            return 0;
        }
        if (code < 0x0800) {
             return 1;
        }
        return 2;
    };


    var error = function (type, msg, filename, line){throw new that.window[type](msg, filename, line);};
    var read_until = function (data, offset, stopchr){
        var buf = [];
        var chr = data.slice(offset, offset + 1);
        var i = 2;
        while (chr != stopchr) {
            if ((i+offset) > data.length) {
                error('Error', 'Invalid');
            }
            buf.push(chr);
            chr = data.slice(offset + (i - 1),offset + i);
            i += 1;
        }
        return [buf.length, buf.join('')];
    };
    var read_chrs = function (data, offset, length){
        var buf;

        buf = [];
        for (var i = 0;i < length;i++){
            var chr = data.slice(offset + (i - 1),offset + i);
            buf.push(chr);
            length -= utf8Overhead(chr); 
        }
        return [buf.length, buf.join('')];
    };
    var _unserialize = function (data, offset){
        var readdata;
        var readData;
        var chrs = 0;
        var ccount;
        var stringlength;
        var keyandchrs;
        var keys;

        if (!offset) {offset = 0;}
        var dtype = (data.slice(offset, offset + 1)).toLowerCase();

        var dataoffset = offset + 2;
        var typeconvert = function(x) {return x;};

        switch (dtype){
            case 'i':
                typeconvert = function (x) {return parseInt(x, 10);};
                readData = read_until(data, dataoffset, ';');
                chrs = readData[0];
                readdata = readData[1];
                dataoffset += chrs + 1;
            break;
            case 'b':
                typeconvert = function (x) {return parseInt(x, 10) !== 0;};
                readData = read_until(data, dataoffset, ';');
                chrs = readData[0];
                readdata = readData[1];
                dataoffset += chrs + 1;
            break;
            case 'd':
                typeconvert = function (x) {return parseFloat(x);};
                readData = read_until(data, dataoffset, ';');
                chrs = readData[0];
                readdata = readData[1];
                dataoffset += chrs + 1;
            break;
            case 'n':
                readdata = null;
            break;
            case 's':
                ccount = read_until(data, dataoffset, ':');
                chrs = ccount[0];
                stringlength = ccount[1];
                dataoffset += chrs + 2;

                readData = read_chrs(data, dataoffset+1, parseInt(stringlength, 10));
                chrs = readData[0];
                readdata = readData[1];
                dataoffset += chrs + 2;
                if (chrs != parseInt(stringlength, 10) && chrs != readdata.length){
                    error('SyntaxError', 'String length mismatch');
                }

                // Length was calculated on an utf-8 encoded string
                // so wait with decoding
                readdata = that.utf8_decode(readdata);
            break;
            case 'a':
                readdata = {};

                keyandchrs = read_until(data, dataoffset, ':');
                chrs = keyandchrs[0];
                keys = keyandchrs[1];
                dataoffset += chrs + 2;

                for (var i = 0; i < parseInt(keys, 10); i++){
                    var kprops = _unserialize(data, dataoffset);
                    var kchrs = kprops[1];
                    var key = kprops[2];
                    dataoffset += kchrs;

                    var vprops = _unserialize(data, dataoffset);
                    var vchrs = vprops[1];
                    var value = vprops[2];
                    dataoffset += vchrs;

                    readdata[key] = value;
                }

                dataoffset += 1;
            break;
            default:
                error('SyntaxError', 'Unknown / Unhandled data type(s): ' + dtype);
            break;
        }
        return [dtype, dataoffset - offset, typeconvert(readdata)];
    };
    
    return _unserialize((data+''), 0)[2];
}

function serialize (mixed_value) {
    // http://kevin.vanzonneveld.net
    // +   original by: Arpad Ray (mailto:arpad@php.net)
    // +   improved by: Dino
    // +   bugfixed by: Andrej Pavlovic
    // +   bugfixed by: Garagoth
    // +      input by: DtTvB (http://dt.in.th/2008-09-16.string-length-in-bytes.html)
    // +   bugfixed by: Russell Walker (http://www.nbill.co.uk/)
    // +   bugfixed by: Jamie Beck (http://www.terabit.ca/)
    // +      input by: Martin (http://www.erlenwiese.de/)
    // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // -    depends on: utf8_encode
    // %          note: We feel the main purpose of this function should be to ease the transport of data between php & js
    // %          note: Aiming for PHP-compatibility, we have to translate objects to arrays
    // *     example 1: serialize(['Kevin', 'van', 'Zonneveld']);
    // *     returns 1: 'a:3:{i:0;s:5:"Kevin";i:1;s:3:"van";i:2;s:9:"Zonneveld";}'
    // *     example 2: serialize({firstName: 'Kevin', midName: 'van', surName: 'Zonneveld'});
    // *     returns 2: 'a:3:{s:9:"firstName";s:5:"Kevin";s:7:"midName";s:3:"van";s:7:"surName";s:9:"Zonneveld";}'

    var _getType = function (inp) {
        var type = typeof inp, match;
        var key;
        if (type == 'object' && !inp) {
            return 'null';
        }
        if (type == "object") {
            if (!inp.constructor) {
                return 'object';
            }
            var cons = inp.constructor.toString();
            match = cons.match(/(\w+)\(/);
            if (match) {
                cons = match[1].toLowerCase();
            }
            var types = ["boolean", "number", "string", "array"];
            for (key in types) {
                if (cons == types[key]) {
                    type = types[key];
                    break;
                }
            }
        }
        return type;
    };
    var type = _getType(mixed_value);
    var val, ktype = '';
    
    switch (type) {
        case "function": 
            val = ""; 
            break;
        case "boolean":
            val = "b:" + (mixed_value ? "1" : "0");
            break;
        case "number":
            val = (Math.round(mixed_value) == mixed_value ? "i" : "d") + ":" + mixed_value;
            break;
        case "string":
            mixed_value = this.utf8_encode(mixed_value);
            val = "s:" + encodeURIComponent(mixed_value).replace(/%../g, 'x').length + ":\"" + mixed_value + "\"";
            break;
        case "array":
        case "object":
            val = "a";
            /*
            if (type == "object") {
                var objname = mixed_value.constructor.toString().match(/(\w+)\(\)/);
                if (objname == undefined) {
                    return;
                }
                objname[1] = this.serialize(objname[1]);
                val = "O" + objname[1].substring(1, objname[1].length - 1);
            }
            */
            var count = 0;
            var vals = "";
            var okey;
            var key;
            for (key in mixed_value) {
                ktype = _getType(mixed_value[key]);
                if (ktype == "function") { 
                    continue; 
                }
                
                okey = (key.match(/^[0-9]+$/) ? parseInt(key, 10) : key);
                vals += this.serialize(okey) +
                        this.serialize(mixed_value[key]);
                count++;
            }
            val += ":" + count + ":{" + vals + "}";
            break;
        case "undefined": // Fall-through
        default: // if the JS object has a property which contains a null value, the string cannot be unserialized by PHP
            val = "N";
            break;
    }
    if (type != "object" && type != "array") {
        val += ";";
    }
    return val;
}

function utf8_decode ( str_data ) {
    // http://kevin.vanzonneveld.net
    // +   original by: Webtoolkit.info (http://www.webtoolkit.info/)
    // +      input by: Aman Gupta
    // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: Norman "zEh" Fuchs
    // +   bugfixed by: hitwork
    // +   bugfixed by: Onno Marsman
    // +      input by: Brett Zamir (http://brett-zamir.me)
    // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // *     example 1: utf8_decode('Kevin van Zonneveld');
    // *     returns 1: 'Kevin van Zonneveld'

    var tmp_arr = [], i = 0, ac = 0, c1 = 0, c2 = 0, c3 = 0;
    
    str_data += '';
    
    while ( i < str_data.length ) {
        c1 = str_data.charCodeAt(i);
        if (c1 < 128) {
            tmp_arr[ac++] = String.fromCharCode(c1);
            i++;
        } else if ((c1 > 191) && (c1 < 224)) {
            c2 = str_data.charCodeAt(i+1);
            tmp_arr[ac++] = String.fromCharCode(((c1 & 31) << 6) | (c2 & 63));
            i += 2;
        } else {
            c2 = str_data.charCodeAt(i+1);
            c3 = str_data.charCodeAt(i+2);
            tmp_arr[ac++] = String.fromCharCode(((c1 & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
            i += 3;
        }
    }

    return tmp_arr.join('');
}

function utf8_encode ( argString ) 
{
    // http://kevin.vanzonneveld.net
    // +   original by: Webtoolkit.info (http://www.webtoolkit.info/)
    // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: sowberry
    // +    tweaked by: Jack
    // +   bugfixed by: Onno Marsman
    // +   improved by: Yves Sucaet
    // +   bugfixed by: Onno Marsman
    // +   bugfixed by: Ulrich
    // *     example 1: utf8_encode('Kevin van Zonneveld');
    // *     returns 1: 'Kevin van Zonneveld'

    var string = (argString+''); // .replace(/\r\n/g, "\n").replace(/\r/g, "\n");

    var utftext = "";
    var start, end;
    var stringl = 0;

    start = end = 0;
    stringl = string.length;
    for (var n = 0; n < stringl; n++) {
        var c1 = string.charCodeAt(n);
        var enc = null;

        if (c1 < 128) {
            end++;
        } else if (c1 > 127 && c1 < 2048) {
            enc = String.fromCharCode((c1 >> 6) | 192) + String.fromCharCode((c1 & 63) | 128);
        } else {
            enc = String.fromCharCode((c1 >> 12) | 224) + String.fromCharCode(((c1 >> 6) & 63) | 128) + String.fromCharCode((c1 & 63) | 128);
        }
        if (enc !== null) {
            if (end > start) {
                utftext += string.substring(start, end);
            }
            utftext += enc;
            start = end = n+1;
        }
    }

    if (end > start) {
        utftext += string.substring(start, string.length);
    }

    return utftext;
}


function empty (mixed_var) {
    // http://kevin.vanzonneveld.net
    // +   original by: Philippe Baumann
    // +      input by: Onno Marsman
    // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +      input by: LH
    // +   improved by: Onno Marsman
    // +   improved by: Francesco
    // +   improved by: Marc Jansen
    // +   input by: Stoyan Kyosev (http://www.svest.org/)
    // *     example 1: empty(null);
    // *     returns 1: true
    // *     example 2: empty(undefined);
    // *     returns 2: true
    // *     example 3: empty([]);
    // *     returns 3: true
    // *     example 4: empty({});
    // *     returns 4: true
    // *     example 5: empty({'aFunc' : function () { alert('humpty'); } });
    // *     returns 5: false
    
    var key;
    
    if (mixed_var === "" ||
        mixed_var === 0 ||
        mixed_var === "0" ||
        mixed_var === null ||
        mixed_var === false ||
        typeof mixed_var === 'undefined'
    ){
        return true;
    }

    if (typeof mixed_var == 'object') {
        for (key in mixed_var) {
            return false;
        }
        return true;
    }

    return false;
}



function explode (delimiter, string, limit) {
    // http://kevin.vanzonneveld.net
    // +     original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +     improved by: kenneth
    // +     improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +     improved by: d3x
    // +     bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // *     example 1: explode(' ', 'Kevin van Zonneveld');
    // *     returns 1: {0: 'Kevin', 1: 'van', 2: 'Zonneveld'}
    // *     example 2: explode('=', 'a=bc=d', 2);
    // *     returns 2: ['a', 'bc=d']
 
    var emptyArray = { 0: '' };
    
    // third argument is not required
    if ( arguments.length < 2 ||
        typeof arguments[0] == 'undefined' ||
        typeof arguments[1] == 'undefined' ) {
        return null;
    }
 
    if ( delimiter === '' ||
        delimiter === false ||
        delimiter === null ) {
        return false;
    }
 
    if ( typeof delimiter == 'function' ||
        typeof delimiter == 'object' ||
        typeof string == 'function' ||
        typeof string == 'object' ) {
        return emptyArray;
    }
 
    if ( delimiter === true ) {
        delimiter = '1';
    }
    
    if (!limit) {
        return string.toString().split(delimiter.toString());
    } else {
        // support for limit argument
        var splitted = string.toString().split(delimiter.toString());
        var partA = splitted.splice(0, limit - 1);
        var partB = splitted.join(delimiter.toString());
        partA.push(partB);
        return partA;
    }
}


function getFilenameExtension(filename)
{
	
	var fileNameArray = explode('.', filename);
	
	var extension = fileNameArray[(fileNameArray.length)-1];
	return extension;													
}

function strtolower (str) 
{
    // Makes a string lowercase  
    // 
    // version: 909.322
    // discuss at: http://phpjs.org/functions/strtolower    // +   original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: Onno Marsman
    // *     example 1: strtolower('Kevin van Zonneveld');
    // *     returns 1: 'kevin van zonneveld'
    return (str+'').toLowerCase();
}


function stripslashes (str) 
{
    // +   original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: Ates Goral (http://magnetiq.com)
    // +      fixed by: Mick@el
    // +   improved by: marrtins    // +   bugfixed by: Onno Marsman
    // +   improved by: rezna
    // +   input by: Rick Waldron
    // +   reimplemented by: Brett Zamir (http://brett-zamir.me)
    // *     example 1: stripslashes('Kevin\'s code');    // *     returns 1: "Kevin's code"
    // *     example 2: stripslashes('Kevin\\\'s code');
    // *     returns 2: "Kevin\'s code"
    return (str+'').replace(/\\(.?)/g, function (s, n1) {
        switch (n1) {            case '\\':
                return '\\';
            case '0':
                return '\0';
            case '':                return '';
            default:
                return n1;
        }
    });}



function Empty(object, EmptyText1, EmptyText2, EmptyText3, EmptyText4)
{	
	var inputVal = $(object).val();
	$('input#search_text').removeClass('red');
	if((inputVal == EmptyText1) || (inputVal == EmptyText2) ||(inputVal == EmptyText3)||(inputVal == EmptyText4)){
			$(object).val("");
	}
}
function Prefill(object, EmptyText1) 
{
	if(($(object).val())== "")
	{
		$(object).val(EmptyText1);
	}
}



function contentEnable( object ) 
{
	if($(object).val() != '0') 
	{
		$('#file').removeAttr('disabled');
		$('#quizz').removeAttr('disabled');
	} 
	else 
	{
		$('#file').attr('disabled', true);
		$('#quizz').attr('disabled', true);
	}
}


//returns true if installed 
function isflashInstalled(base_url,callback)
{
	$.getScript(base_url+"/js/lib/AC_OETags.js", function() 
	{
		var requiredMajorVersion = 8;
		// Minor version of Flash required
		var requiredMinorVersion = 0;
		// Minor version of Flash required
		var requiredRevision = 0;
		// Version check based upon the values entered above in "Globals"
		var hasReqestedVersion = DetectFlashVer(requiredMajorVersion, requiredMinorVersion, requiredRevision);
		var flag;
		// Check to see if the version meets the requirements for playback
		if (hasReqestedVersion) 
		{
			// if we've detected an acceptable version
			// embed the Flash Content SWF when all tests are passed
			flag = true;
		} 
		else 
		{  // flash is too old or we can't detect the plugin
			flag = false;
		}
		callback(flag);
	});

}

//returns and array( d=> , m =>, y => ) from splitting the given date
function getSeparatedvaluesFromDate(date)
{
	var splittedArr = explode(" ", date)
	var ymdPart =splittedArr[0];
	var hisPart =splittedArr[1];
	var ymdHisArray = new Array();
	var ymdArr = explode("-",ymdPart);
	
	var hisArray = explode(":",hisPart);
	
	ymdHisArray["y"] = ymdArr[0];
	ymdHisArray["m"] = ymdArr[1];
	ymdHisArray["d"] = ymdArr[2];
	
	ymdHisArray["h"] = hisArray[0];
	ymdHisArray["i"] = hisArray[1];
	ymdHisArray["s"] = hisArray[2];
	
	return ymdHisArray;
}


function moveThisHorizontally(element, offset)
{
	var currHorPos = $(element).css("left");
	
	var numericPos = strpos(currHorPos, "px");
	alert(numericPos);
}


function moveThisVertically(element, offset)
{
	var currVertPos = $(element).css("top");
	
	var numericEnd = strpos(currVertPos, "px");
	
	numericPos = substr( currVertPos, 0, numericEnd );
	var newPos = parseInt(numericPos)+parseInt(offset);
	
	$(element).css("top",newPos+"px");

}

function is_array (mixed_var) {
    // http://kevin.vanzonneveld.net
    // +   original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: Legaev Andrey
    // +   bugfixed by: Cord
    // +   bugfixed by: Manish
    // +   improved by: Onno Marsman
    // +   improved by: Brett Zamir (http://brett-zamir.me)
    // +   bugfixed by: Brett Zamir (http://brett-zamir.me)
    // %        note 1: In php.js, javascript objects are like php associative arrays, thus JavaScript objects will also
    // %        note 1: return true  in this function (except for objects which inherit properties, being thus used as objects),
    // %        note 1: unless you do ini_set('phpjs.objectsAsArrays', true), in which case only genuine JavaScript arrays
    // %        note 1: will return true
    // *     example 1: is_array(['Kevin', 'van', 'Zonneveld']);
    // *     returns 1: true
    // *     example 2: is_array('Kevin van Zonneveld');
    // *     returns 2: false
    // *     example 3: is_array({0: 'Kevin', 1: 'van', 2: 'Zonneveld'});
    // *     returns 3: true
    // *     example 4: is_array(function tmp_a(){this.name = 'Kevin'});
    // *     returns 4: false

    var key = '';
    var getFuncName = function (fn) {
        var name = (/\W*function\s+([\w\$]+)\s*\(/).exec(fn);
        if (!name) {
            return '(Anonymous)';
        }
        return name[1];
    };

    if (!mixed_var) {
        return false;
    }

    // BEGIN REDUNDANT
    this.php_js = this.php_js || {};
    this.php_js.ini = this.php_js.ini || {};
    // END REDUNDANT

    if (typeof mixed_var === 'object') {

        if (this.php_js.ini['phpjs.objectsAsArrays'] &&  // Strict checking for being a JavaScript array (only check this way if call ini_set('phpjs.objectsAsArrays', 0) to disallow objects as arrays)
            (
            (this.php_js.ini['phpjs.objectsAsArrays'].local_value.toLowerCase &&
                    this.php_js.ini['phpjs.objectsAsArrays'].local_value.toLowerCase() === 'off') ||
                parseInt(this.php_js.ini['phpjs.objectsAsArrays'].local_value, 10) === 0)
            ) {
            return mixed_var.hasOwnProperty('length') && // Not non-enumerable because of being on parent class
                            !mixed_var.propertyIsEnumerable('length') && // Since is own property, if not enumerable, it must be a built-in function
                                getFuncName(mixed_var.constructor) !== 'String'; // exclude String()
        }

        if (mixed_var.hasOwnProperty) {
            for (key in mixed_var) {
                // Checks whether the object has the specified property
                // if not, we figure it's not an object in the sense of a php-associative-array.
                if (false === mixed_var.hasOwnProperty(key)) {
                    return false;
                }
            }
        }

        // Read discussion at: http://kevin.vanzonneveld.net/techblog/article/javascript_equivalent_for_phps_is_array/
        return true;
    }

    return false;
}


//Toggles between student and tutor room
function toggleRoom(obj,baseUrl)
{
	selectVal = $(obj).val();
	if(selectVal == 1)
		redirectTo = "my_teaching_calendar";
	else if(selectVal == 2)
		redirectTo = "my_study_centre";
	
	location.href = baseUrl+"/"+redirectTo;
	
}

function print_r(array)
{
	
	if(is_array(array))
	{
		var display = "";
		//alert(array.length);
		var cnt = 0;
		for(var i=0;i<array.length;i++)
		{
			cnt++;
			if(cnt>1)
			{
				prependComma = ",";
			}
			else
			{
				prependComma = "";
			}
			//alert(array[i]);
			display += prependComma+"["+i+"] => "+array[i];
		}
		alert("Array("+display+")");
	}
	else
	{
		alert("Array()");
	}
}

function showAskForHelpPopup(popup_id,ref, left, top)
{
	
	if(!ref)
		ref = ".footer";
	if(!left)
		left = 300;
	if(!top)
		top = -280;
	var popup_box = $("div#"+popup_id);		
	var reference_box = $(ref);	
	var ref= $(reference_box).position()	
	ref_left = ref.left + left;
	ref_top = ref.top + top;
	$(popup_box).removeClass("hidden");
	centerThisElement(popup_box);
	displayOverElement(popup_box,"img.messagetous")
	
}

function processAskForHelpPopup(base_url, popup_id)
{
	var sender_name, sender_email, more_details;
	//reset errors
	$('p.error_sender_name').addClass('hidden');
	$('p.error_sender_email').addClass('hidden');
	$('p.error_more_details').addClass('hidden');
	
	sender_name = $('#help_sender_name').val();
	sender_email = $('#help_sender_email').val();
	more_details = $('#help_more_details').val();
	
	var error = false;
	if(sender_name=='')
	{
		$('p.error_sender_name').removeClass('hidden');
		error = true;
	}
	if(sender_email=='')
	{
		$('p.error_sender_email').removeClass('hidden');
		error = true;
	}
	if(more_details=='')
	{
		$('p.error_more_details').removeClass('hidden');
		error = true;
	}
	if(!error)
	{
		$.post(base_url+"/ajax/sendMessage", { operation:'ask_for_help', sender_fullname: sender_name, sender_email: sender_email, message: more_details},
		function(data)
		{
			if(data.success)
			{				
				$('p#messageInfo').html("Message sent successfully!!!");
				$('p#messageInfo').addClass("green");
				$('p#messageInfo').removeClass("hidden");
				$('p#messageInfo').removeClass("warning");
				$('p#messageInfo').show();
			}
			else
			{
				$('p#messageInfo').html("Message sending failed!!!");
				$('p#messageInfo').addClass("warning");
				$('p#messageInfo').removeClass("hidden");				
				$('p#messageInfo').removeClass("green");
			}	
			
		}, "json");

	}
	
}

//Not used yet
function validatePattern(input)
{

	textPattern = /^([a-zA-Z0-9_(,)?&*%#<@$-: ])+$/;
	coversPattern = coursePattern = /^([a-zA-Z0-9_, ])+$/;
	
	if(coversPattern.test(input))
	{
		return true;
	} 
	else
	{
		return false;
	}
}