function XHR(){	
	var xhr;
	try{
		xhr=new XMLHttpRequest();
	}catch(e){
    		var a=['MSXML2.XMLHTTP.5.0','MSXML2.XMLHTTP.4.0','MSXML2.XMLHTTP.3.0','MSXML2.XMLHTTP','MICROSOFT.XMLHTTP.1.0','MICROSOFT.XMLHTTP.1','MICROSOFT.XMLHTTP'];
    		for (var i=0;i<a.length;i++){
      			try{
        			xhr = new ActiveXObject(a[i]);
        			break;
      			}catch(e){}
    		}
  	}
	return xhr;
}
function ajaxinfo(cityid, disptype, divid){	
	var lsv = document.getElementById(divid);
	
	lsv.innerHTML="<div style=\"font-size:14px; text-align:center; padding-top:20px;\"><img src=\"/images/recordloads.gif\" /> 正在读取中...</div>";	
	var xhr=XHR();
	xhr.open("GET", "/industry/ajaxindex/?i="+cityid+"&d="+disptype+"&n="+Math.random(), true);
	xhr.onreadystatechange=function(){
		if(xhr.readyState==4){
			if(xhr.status==200){
				lsv.innerHTML=xhr.responseText;
			}else{
				lsv.innerHTML="<div style=\"font-size:14px; text-align:center; padding-top:20px;\"><img src=\"/images/recordloads.gif\">获取数据失败，请刷新重试！</div>";	
			}
		}
		
	}
	xhr.send(null);
}