// To get a referrer page
    function getReferrer(){
        var referrerPage = document.referrer;
        //document.frm.eGrabberReferrerURL.value = referrerPage;
        
        // To insert a promo value in a lead_source hidden field
        insertPromo();
        // For google search keyword
        read();
        // To get a time zone and store it in a timezone hidden field
        calculate_time_zone();
        
    }
    
    // To set a google keywords in a searchkeyword field
    function read(){
		var keyword = readCookie("keyword");
		var referrerurl = readCookie("referrerurl");	
		var jrox = readCookie("jrox");
		
		if(keyword=="")
			document.frm.searchkeyword.value = "No keyword found";
		else
			document.frm.searchkeyword.value = keyword;
			
		if(referrerurl=="")
			document.frm.eGrabberReferrerURL.value = "No keyword found";
		else
			document.frm.eGrabberReferrerURL.value = referrerurl;

		if(jrox!="")
			document.frm.jrox.value = jrox;
    }
	

  // To read a cookie
    function readCookie(name) {
      	var nameEQ = name + "=";
      	var ca = document.cookie.split(';');
      	for(var i=0;i < ca.length;i++) {
      		var c = ca[i];
      		while(c.charAt(0)==' ') c = c.substring(1,c.length);
      		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
      	}
      	return null;
    }
    
    // To erase a cookie
    function eraseCookie(name) {
    	 createCookie(name,"",-1);
    }
    
    // To get a client system time
    function getTime(){
        var currentTime = new Date();
        var hours = currentTime.getHours();
        var minutes = currentTime.getMinutes();
        var time = hours + ":" + minutes;
        return(time);
    }
    
    // To calculate a client time zone
    function calculate_time_zone() {
         
        var timezoneOffsetArray   = new Array("-12:00","-11:00","-10:00","-09:30","-09:00",
                                        "-08:00","-07:00","-06:00","-05:00",
                                        "-04:00","-03:30","-03:00","-02:00",
                                        "-01:00","00:00","+01:00","+02:00",
                                        "+03:00","+03:30","+04:00","+04:30",
                                        "+05:00","+05:30","+05:45","+06:00",
                                        "+06:30","+07:00","+08:00","+09:00",
                                        "+09:30","+10:00","+10:30","+11:00","+11:30","+12:00");
        var timezoneArray         = new Array("IDLW","SST","HST","MART","AKST",
                                        "PST","MST","CST","EST",
                                        "AST","NST","BST","FDT",
                                        "AT","GMT","CET","EET",
                                        "MSK","IT","GST","AFT",
                                        "PKT","IST","NPT","BDT",
                                        "MMT","ICT","HKT","KST",
                                        "ACST","AEST","LHST","SBT","NFT","NZT");
       
        var rightNow = new Date();
        
        var jan1                   = new Date(rightNow.getFullYear(), 0, 1, 0, 0, 0, 0);  // jan 1st
        var june1                  = new Date(rightNow.getFullYear(), 6, 1, 0, 0, 0, 0); // june 1st
        var temp                   = jan1.toGMTString();
        var jan2                   = new Date(temp.substring(0, temp.lastIndexOf(" ")-1));
        temp                       = june1.toGMTString();
        var june2                  = new Date(temp.substring(0, temp.lastIndexOf(" ")-1));
        var std_time_offset        = (jan1 - jan2) / (1000 * 60 * 60);
        var daylight_time_offset   = (june1 - june2) / (1000 * 60 * 60);
        var dst;
        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
        }
        
        var time = getTime();
        for (i=0; i<timezoneOffsetArray.length; i++) {
           if(timezoneOffsetArray[i] == convert(std_time_offset)) {
              var timezone = timezoneArray[i];
           }
        }
        document.frm.timezone.value = time+" "+timezone;
    }
    
    function convert(value) {
        var hours = parseInt(value);
        value -= parseInt(value);
        value *= 60;
        var mins = parseInt(value);
        value -= parseInt(value);
        value *= 60;
        var secs = parseInt(value);
        var display_hours = hours;
        display_hours = (hours < 10 && hours > 0) ? "+0"+hours : "+"+hours; // positive
        display_hours = (hours == 0) ? "0"+hours : display_hours; // handle GMT case (00:00)
        display_hours = (hours < 0 && hours > -10) ? "-0"+Math.abs(hours) : display_hours; // neg
        mins = (mins < 10) ? "0"+mins : mins;
        return display_hours+":"+mins;
    }
    
    
    // Change made in the function to split the jrox cookie properly 
    function insertPromo(){
	var pattern = /-\d-\d-\d-+/; 
	var ATScookie = readCookie("jrox");
	if(ATScookie!=='' && ATScookie!==null){
	    var patternSplit = ATScookie.split(pattern);
	    if(patternSplit.length==2){
		document.frm.lead_source.value = patternSplit[1];
	    }
	}
    }
    
/*	
    // To get a promo for CRM
    function insertPromo(){
        var campaign = "";
        var ATScookie = readCookie("jrox");
        if(ATScookie!=='' && ATScookie!==null){
            var campaignArray = ATScookie.split("-");
            var campaign = campaignArray[5];
            if(campaign!=='' && campaign!==undefined){
                document.frm.lead_source.value = campaign;
            }
        }
    }
*/