var searchString = window.location.search.substring(1); 
var Parameters = new Object(); 
var nameValuePairs = searchString.split(/&/); 
var nameValuePair; 
var name; 
var value; 
 
for (var i = 0; i < nameValuePairs.length; i++) { 
    nameValuePair = nameValuePairs[i].split(/=/); 
 
    name = nameValuePair[0];     
    value = nameValuePair[1]; 
     
    name = name.toLowerCase();     
        
    if (name == "lot"){ 
    if (typeof(value)!="undefined"){ 
      value = value.toLowerCase(); 
       
      pathname = location.pathname; 
      myDomain = pathname.substring(0,pathname.lastIndexOf('/')) +'/'; 
      // set expiry date to 30 days from now. 
      var largeExpDate = new Date (); 
      largeExpDate.setTime(largeExpDate.getTime() + (30 * 24 * 3600 * 1000)); 
      SetCookie(name,value,largeExpDate,myDomain); 
    }          
    } 
} 
 
 
//////////////////functions//////////////////////////////////////////////// 
function SetCookie (name, value) { 
        var argv = SetCookie.arguments; 
        var argc = SetCookie.arguments.length; 
        var expires = (argc > 2) ? argv[2] : null;        
        var path = (argc > 3) ? argv[3] : null; 
        var domain = (argc > 4) ? argv[4] : null; 
        var secure = (argc > 5) ? argv[5] : false; 
        document.cookie = name + "=" + escape (value) + 
                ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) + 
                ((path == null) ? "" : ("; path=/")) + 
                ((domain == null) ? "" : ("; domain=" + domain)) + 
                ((secure == true) ? "; secure" : ""); 
}