ajax.js里面有内容显示效果，根据ID

ajax.js里面有内容显示效果，根据ID

    var http_request = false;
    var success=false;
    var ShowAllListFlag=1;
    var DisplayArticle=true;
    function makeRequest(url,cateID) {

        http_request = false;

        if (window.XMLHttpRequest) { // Mozilla, Safari,...
            http_request = new XMLHttpRequest();
            if (http_request.overrideMimeType) {
                http_request.overrideMimeType('text/xml');
            }
        } else if (window.ActiveXObject) { // IE
            try {
                http_request = new ActiveXObject("Msxml2.XMLHTTP");
            } catch (e) {
                try {
                    http_request = new ActiveXObject("Microsoft.XMLHTTP");
                } catch (e) {}
            }
        }

        if (!http_request) {
            alert('Giving up :( Cannot create an XMLHTTP instance');
            return false;
        }
        http_request.onreadystatechange = alertContents;
        http_request.open('GET', url, false);
        http_request.send(null);
        if (success==true)
        {
            try {
                   cateID.innerHTML=http_request.responseText;