var xmlHttp;
	function creatXMLHttpRequest() {
		/*
		if(window.ActiveXObject) {
			xmlHttp = new ActiveXObject('Microsoft.XMLHTTP');
		} else if(window.XMLHttpRequest) {
			xmlHttp = new XMLHttpRequest();
		}*/
		/**
			ajax creatXMLHttpRequest()ÐÞ¸Ä by .Á躮·æ.  2009.3.24
			¼æÈÝ»ðºü IE6£¬7  åÛÓÎ		
		*/
	
		var request = false;
		
		if(window.XMLHttpRequest) {
			
			request = new XMLHttpRequest();
			if(request.overrideMimeType) {
				request.overrideMimeType('text/xml');
			}
			
		} else if(window.ActiveXObject) {
			
			var versions = ['Microsoft.XMLHTTP', 'MSXML.XMLHTTP', 'Microsoft.XMLHTTP', 'Msxml2.XMLHTTP.7.0', 'Msxml2.XMLHTTP.6.0', 'Msxml2.XMLHTTP.5.0', 'Msxml2.XMLHTTP.4.0', 'MSXML2.XMLHTTP.3.0', 'MSXML2.XMLHTTP'];
			for(var i=0; i<versions.length; i++) {
				try {
					request = new ActiveXObject(versions[i]);
				
					if(request) {
					
						xmlHttp = request;	
					}
				} catch(e) {
					
				document.getElementById("result").innerHTML ="request " + request; 
					
					}
			}
		}
	
		xmlHttp = request;		
		
		
		
	}
	function startRequest() {
		var queryString;
		var domain = document.getElementById('domain').value;
		queryString = "domain=" + domain;
		creatXMLHttpRequest();
		xmlHttp.open("POST","pagerank/pagerank.php","true");
		xmlHttp.onreadystatechange = handleStateChange;
		xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded;");
		xmlHttp.send(queryString);
	}

	function handleStateChange() {
		if(xmlHttp.readyState == 1) {
			document.getElementById('result').style.cssText = "";
			document.getElementById('result').innerHTML = "Loading...";
		}
		if(xmlHttp.readyState == 4) {
			if(xmlHttp.status == 200) {
				document.getElementById('result').style.cssText = "";
				var allcon =  xmlHttp.responseText;
				document.getElementById('result').innerHTML = allcon;
			}
		}
	}