function GE(a){
  return document.getElementById(a);
}
function Check(id,domainId,action){
	var X=new XMLHttpRequest();
	if(X){
		X.onreadystatechange=function(){
			if(X.readyState==4){
				if(X.status==200){
					GE(domainId).innerHTML=X.responseText;
				}else{
					GE(domainId).innerHTML=X.statusText;
				}
			}
			else{
				//GE(domainId).innerHTML="..";
			}
		};
		X.open('POST',action,true);
		X.setRequestHeader('Content-Type','application/x-www-form-urlencoded;charset=UTF-8');
		X.send("id="+id);
	}
	else{
		GE(domainId).innerHTML='你的浏览器不支持XMLHttpRequest';
	}
}

//----------------------------------------------------------------------------------------------------

// IE support
if (window.ActiveXObject && !window.XMLHttpRequest)
{
	window.XMLHttpRequest = function()
		{
			var msxmls = new Array('Msxml2.XMLHTTP.5.0','Msxml2.XMLHTTP.4.0','Msxml2.XMLHTTP.3.0','Msxml2.XMLHTTP','Microsoft.XMLHTTP');
			for (var i = 0; i < msxmls.length; i++)
			{
				try
				{
					return new ActiveXObject(msxmls[i]);
				}
				catch (e)
				{
				}
			}
			return null;
		};
}