var OS = 'FF';
	
// Create XMLHttpRequest Object
function createRequester(){
	if(requester != null && requester.readyState != 0 && requester.readyState != 4){
		requester.abort();
	}
	try{
		var requester = new XMLHttpRequest();
	}
	catch (error){
		try{
			//alert("trying IE");
 			var requester = new ActiveXObject("Microsoft.XMLHTTP");
 			OS = 'IE';
		}
		catch (error){
			alert(error);
			return false;
		}
	}
	//requester.setHeader("Cache-Control", "no-cache");
	return requester;
}