// COOKIES TRACKING START
/*
only the first 2 parameters are required, the cookie name, the cookie
value. Cookie time is in milliseconds, so the below expires will make the 
number you pass in the Set_Cookie function call the number of days the cookie
lasts, if you want it to be hours or minutes, just get rid of 24 and 60.

Generally you don't need to worry about domain, path or secure for most applications
so unless you need that, leave those parameters blank in the function call.
*/
function Set_Cookie( name, value, expires, path, domain, secure ) {
// set time, it's in milliseconds
var today = new Date();
today.setTime( today.getTime() );
// if the expires variable is set, make the correct expires time, the
// current script below will set it for x number of days, to make it
// for hours, delete * 24, for minutes, delete * 60 * 24
if ( expires )
{
expires = expires * 1000 * 60 * 60 * 24;
}
//alert( 'today ' + today.toGMTString() );// this is for testing purpose only
var expires_date = new Date( today.getTime() + (expires) );
//alert('expires ' + expires_date.toGMTString());// this is for testing purposes only

document.cookie = name + "=" +escape( value ) +
( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" ) + //expires.toGMTString()
( ( path ) ? ";path=" + path : "" ) + 
( ( domain ) ? ";domain=" + domain : "" ) +
( ( secure ) ? ";secure" : "" );
}
// this function gets the cookie, if it exists
function Get_Cookie( name ) {
var start = document.cookie.indexOf( name + "=" );
var len = start + name.length + 1;
if ( ( !start ) && ( name != document.cookie.substring( 0, name.length ) ) )
{
return null;
}
if ( start == -1 ) return null;
var end = document.cookie.indexOf( ";", len );
if ( end == -1 ) end = document.cookie.length;
return unescape( document.cookie.substring( len, end ) );
}
// this deletes the cookie when called
function Delete_Cookie( name, path, domain ) {
if ( Get_Cookie( name ) ) document.cookie = name + "=" +
( ( path ) ? ";path=" + path : "") +
( ( domain ) ? ";domain=" + domain : "" ) +
";expires=Thu, 01-Jan-1970 00:00:01 GMT";
}

// This initialises an array called GET_DATA
function initialiseGetData(){
    GET_DATA=new Array();
    var getDataString=new String(window.location);
    var questionMarkLocation=getDataString.search(/\?/);
    if (questionMarkLocation!=-1){
        getDataString=getDataString.substr(questionMarkLocation+1);
        var getDataArray=getDataString.split(/&/g);
      for (var i=0;i<getDataArray.length;i++){
            var nameValuePair=getDataArray[i].split(/=/);
            GET_DATA[unescape(nameValuePair[0])]=unescape(nameValuePair[1]);
      }
    }
}

initialiseGetData(); 

// Set the cookie for AID
if ( Get_Cookie("GetAID") == null ) {
    var AidValue = GET_DATA['AID'];    
    Set_Cookie( 'GetAID', AidValue, '', '/', '', '' ); 
    //alert ("Cookies set:" + AidValue);
}
else {
    //alert ("Do Nothing: " + Get_Cookie("AidValue") );
}
// Set the cookie for PID
if ( Get_Cookie("GetPID") == null ) {
    var PidValue = GET_DATA['PID'];    
    Set_Cookie( 'GetPID', PidValue, '', '/', '', '' ); 
    //alert ("Cookies set:" + PidValue);
}
else {
    //alert ("Do Nothing: " + Get_Cookie("PidValue") );
}


// Set the cookie for referrer
if ( Get_Cookie("ReferrerURL") == null ) {
    var referrer = document.referrer;    
    Set_Cookie( 'ReferrerURL', referrer, '', '/', '', '' ); 
    //alert ("Cookies set:" + referrer);
}
else {
    //alert ("Do Nothing: " + Get_Cookie("ReferrerURL") );
}