//«Ø¥ß XMLHttpRequest ª«¥ó
function XmlHttp()
{
	try{return new ActiveXObject("Msxml2.XMLHTTP");} catch(e){}	
	try{return new ActiveXObject("Microsoft.XMLHTTP");} catch(e){}	
	try{return new XMLHttpRequest();} catch(e){}	
	alert("XMLHttpRequest Object not existed!!");
	return null;
}