function XMLHttp()
{
	var xmlHttp = null;
	
	try
	{
		xmlHttp = new XMLHttpRequest();
	}
	catch (e)
	{
		try
		{
			xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (E)
		{
			xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	
	return xmlHttp;
}