// JavaScript Document
function GetXmlHttpObject() {
	var xmlHttp=null;
	try
  		{
		  // Firefox, Opera 8.0+, Safari
		  xmlHttp=new XMLHttpRequest();
  		}
	catch (e)
  		{
  		// Internet Explorer
			try
    		{
    			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    		}
		    catch (e)
    		{
    		xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
    		}
 		}
	return xmlHttp;
}
function HTTPrequest(requestURL,responsefunction) {
		xmlHttp=GetXmlHttpObject();
		if (xmlHttp==null)	{
			return;
  		}
		
		xmlHttp.onreadystatechange=responsefunction;
		xmlHttp.open("GET",requestURL,true);
		xmlHttp.send(null);
}