function getXMLHTTP()
		{
			try
			{
				request_o = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch(ex)
			{
				//either this is not IE, or it is a version of IE which does not support XMLHTTP
				var notIECompatibleXMLHTTP=true;
			}
			if(notIECompatibleXMLHTTP==true)
			{
				try
				{
					request_o = new XMLHttpRequest();
				}
				catch(ex)
				{
					//we can't use AJAX because this browser is not compatible.
				request_o = false;
				}
			}
			return request_o;
		}
		
		var http = getXMLHTTP();