// Create XMLHttp object for AJAX functions
function createXMLHttp()
{
	if(typeof XMLHttpRequest != "undefined")
	{
		return new XMLHttpRequest();
	}
	else if(window.ActiveXObject)
	{
		var aVersions = [ "MSXML2.XMLHttp.5.0", "MSXML2.XMLHttp.4.0", "MSXML2.XMLHttp.3.0", "MSXML2.XMLHttp", "Microsoft.XMLHttp" ];
		
		for(var i=0; i < aVersions.length; i++)
		{
			try
			{
				var oXmlHttp = new ActiveXObject(aVersions[i]);
				return oXmlHttp;
			}
			catch(oError)
			{
				// Do nothing
			}
		}
	}
	return null;
}