var xmlHttp;
var objID;
function AJAXFunction(tmpurl,obj){
	xmlHttp = GetXmlHttpObject();
	objID = obj;
	var url = tmpurl + '&time=' + Date.parse(new Date());
	if(xmlHttp === null){
    	return;
	}
	if(objID != ""){
		xmlHttp.onreadystatechange=stateChanged;
	}
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
}

function GetXmlHttpObject(){
	var xmlHttp;
	try{
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
	}catch (e){
		// Internet Explorer
		try{
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		}catch (e){
			try{
				xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
			}catch (e){
				alert("ÄúµÄžgÓ[Æ÷²»Ö§³ÖAJAX£¡");
				return false;
			}
		}
    }
    return xmlHttp;
}

function stateChanged(){
	if (xmlHttp.readyState==4){
		document.getElementById(objID).innerHTML=xmlHttp.responseText;
	}
}