function getXMLRequest(){
		var xmlRequest = null;
		var progids=['Msxml2.XMLHTTP', 'Microsoft.XMLHTTP', 'Msxml2.XMLHTTP.4.0'];
		//firefox IE7
		try{
			xmlRequest = new XMLHttpRequest();
		}catch(e){
			alert("It's not firefox");
		};
		//IE7-
		if(!xmlRequest){
			for(var i=0; i<3; ++i){
				try{
					xmlRequest = new ActiveXObject(progids[i]);
				}catch(e){
					alert("It's not "+progids[i]);
				}
			}
		};
		//alert("---"+xmlRequest);
		return xmlRequest;
	}
	
	function $(ID) {
		return document.getElementById(ID);
	}