var key=''; 
var str=new Array(); 
function createAjaxObj(){ 
 var httprequest=false 
 //document.domain='chinaz.com'; 
 if (window.XMLHttpRequest){ // if Mozilla, Safari etc 
 httprequest=new XMLHttpRequest() 
 if (httprequest.overrideMimeType) 
 httprequest.overrideMimeType('text/xml'); 
 } 
 else if (window.ActiveXObject){ // if IE 
 try 
 { 
 httprequest=new ActiveXObject("Msxml2.XMLHTTP"); 
 } 
 catch (e) 
 { 
 try 
 { 
 httprequest=new ActiveXObject("Microsoft.XMLHTTP"); 
 } 
 catch (e){} 
 } 
 } 
 return httprequest; 
} 
function load_feedback(arcID,pg){
/* 
 var url = "http://www.chinaz.com/plus/feedback_ajax.php?action=show&arcID="+arcID+"&pg="+pg; 
 var ajax = new oAjax(); 
 // 是否显示错误 
 //ajax.error = true; 
 // 请求的页面的编码为'gb2312'或空 
 //ajax.encode = 'gb2312'; 
 // 回调函数 
 ajax.callback = function (content) { 
 // 处理返回内容 
 eval('var obj = ' + content); 
 document.getElementById('fedbk').innerHTML=obj.a; 
 document.getElementById('fedcount').innerHTML=obj.b; 
 }; 
 ajax.send(url); 
*/ 
 var xmlhttp = createAjaxObj(); 
 try 
 { 
 var params="action=show&arcID="+arcID+"&pg="+pg; 
 xmlhttp.abort(); 
xmlhttp.open("get","/plus/feedback_ajax.php?"+params,true);
xmlhttp.setRequestHeader("Content-type", "text/html;charset=gb2312");
xmlhttp.setRequestHeader("If-Modified-Since","0");
xmlhttp.setRequestHeader("Content-length", params.length);
xmlhttp.setRequestHeader("Connection", "close");
xmlhttp.onreadystatechange=f
xmlhttp.send(null);
 }catch(ex){} 
 function f() 
 { 
 if(xmlhttp.readyState!= 4 || xmlhttp.status!=200 ) 
 return ; 
 var b= xmlhttp.responseText; 
 var obj = eval("("+b+")"); 
 document.getElementById('fedbk').innerHTML=obj.a; 
 document.getElementById('fedcount').innerHTML=obj.b; 
 document.getElementById('feedcounttop').innerHTML=obj.b; 
 } 
} 
function load_allfeedback(arcID,pg){ 
 var xmlhttp = createAjaxObj(); 
 try 
 { 
 var params="action=showall&arcID="+arcID+"&pg="+pg; 
 xmlhttp.abort(); 
xmlhttp.open("get","/plus/feedback_ajax.php?"+params,true);
xmlhttp.setRequestHeader("Content-type", "text/html;charset=gb2312");
xmlhttp.setRequestHeader("If-Modified-Since","0");
xmlhttp.setRequestHeader("Content-length", params.length);
xmlhttp.setRequestHeader("Connection", "close");
xmlhttp.onreadystatechange=f
xmlhttp.send(null);
 }catch(ex){} 
 function f() 
 { 
 if(xmlhttp.readyState!= 4 || xmlhttp.status!=200 ) 
 return ; 
 var content= xmlhttp.responseText; 
 var obj = eval("("+content+")"); 
 // eval('var obj = ' + content); 
 document.getElementById('fedbk').innerHTML=obj.a; 
 //document.getElementById('fedcount').innerHTML=obj.b; 
 } 
} 
function feed_back(){
 var msg = trim(document.getElementById('msg').value); 
 var arcID = document.getElementById('arcID').value; 
 var username = trim(document.getElementById('username').value); 
 var pwd = trim(document.getElementById('pwd').value); 
 var checkbox = document.getElementById('notuser'); 
 if(checkbox.checked) 
 var notuser = 1; 
 else 
 var notuser = 0; 
 var xmlhttp = createAjaxObj(); 
 try 
 { 
 params="action=send&arcID="+arcID+"&msg="+msg+"&username="+username 
 +"&pwd="+pwd+"¬user="+notuser; 
xmlhttp.abort();
xmlhttp.open("get","/plus/feedback_ajax.php?"+params,true);
xmlhttp.setRequestHeader("Content-type", "text/html;charset=gb2312");
xmlhttp.setRequestHeader("If-Modified-Since","0");
xmlhttp.setRequestHeader("Content-length", params.length);
xmlhttp.setRequestHeader("Connection", "close");
xmlhttp.onreadystatechange=f
xmlhttp.send(null);
 }catch(ex){} 
 function f() 
 { 
 if(xmlhttp.readyState!= 4 || xmlhttp.status!=200 ) 
 return ; 
 var arr = xmlhttp.responseText.split("@:"); 
 if(!arr[1]){ 
 alert(xmlhttp.responseText); 
 } 
 else{ 
 if(arr[0] != 'true') 
 alert(arr[0]); 
 alert(arr[2]); 
 ck_yzimg(); 
 load_feedback(arr[1],1); 
 } 
 } 
}
function goodbad(fid,arcid,actname,pg){
 
 var xmlhttp = createAjaxObj(); 
 try 
 { 
 params = "action="+actname+"&fid="+fid+"&arcID="+arcid+"&pg="+pg; 
xmlhttp.abort();
xmlhttp.open("get","/plus/feedback_ajax.php?"+params,true);
xmlhttp.setRequestHeader("Content-type", "text/html;charset=gb2312");
xmlhttp.setRequestHeader("If-Modified-Since","0");
xmlhttp.setRequestHeader("Content-length", params.length);
xmlhttp.setRequestHeader("Connection", "close");
xmlhttp.onreadystatechange=f
xmlhttp.send(null);
 }catch(ex){} 
 function f() 
 { 
 if(xmlhttp.readyState!= 4 || xmlhttp.status!=200 ) 
 return ; 
 var arr = xmlhttp.responseText.split("@:"); 
 if(!arr[1]) 
 alert(xmlhttp.responseText); 
 else{ 
 alert(arr[0]); 
 load_feedback(arr[1],arr[2]); 
 } 
 } 
}
function goodbad2(fid,arcid,actname,pg){
 
 var xmlhttp = createAjaxObj(); 
 try 
 { 
 params = "action="+actname+"&fid="+fid+"&arcID="+arcid+"&pg="+pg; 
xmlhttp.abort();
xmlhttp.open("get","/plus/feedback_ajax.php?"+params,true);
xmlhttp.setRequestHeader("Content-type", "text/html;charset=gb2312");
xmlhttp.setRequestHeader("If-Modified-Since","0");
xmlhttp.setRequestHeader("Content-length", params.length);
xmlhttp.setRequestHeader("Connection", "close");
xmlhttp.onreadystatechange=f
xmlhttp.send(null);
 }catch(ex){} 
 function f() 
 { 
 if(xmlhttp.readyState!= 4 || xmlhttp.status!=200 ) 
 return ; 
 var arr = xmlhttp.responseText.split("@:"); 
 if(!arr[1]) 
 alert(xmlhttp.responseText); 
 else{ 
 alert(arr[0]); 
 load_allfeedback(arr[1],arr[2]); 
 } 
 } 
}
function pg(vl){ 
 var arcID = document.getElementById('arcID').value; 
 load_feedback(arcID,vl); 
} 
function pg2(arcID,vl){ 
 //var arcID = document.getElementById('arcID').value; 
 load_allfeedback(arcID,vl); 
} 
function ck_yzimg(){ 
 //document.all.cknum.value=''; 
 document.all.msg.value=''; 
 document.all.username.value=''; 
 document.all.pwd.value=''; 
 document.getElementsByName('sb')[0].disabled = false; 
 //document.all.img1.onclick(); 
} 
function trim(s) { 
 return s.replace( /^\s*/, "" ).replace( /\s*$/, "" ); 
}
////// 
/* 
String.prototype.Contains = function(str) { 
 return (this.indexOf(str) > -1); 
}; 
var Browser = { 
 s : navigator.userAgent.toLowerCase() 
}; 
(function (b) { 
 b.IsIE = b.s.Contains('msie'); 
 b.IsIE5 = b.s.Contains('msie 5'); 
 b.IsIE6 = b.s.Contains('msie 6'); 
 b.IsIE7 = b.s.Contains('msie 7'); 
 b.IsIE56 = !b.IsIE7 && (b.IsIE6 || b.IsIE5); 
 b.IsGecko = b.s.Contains('gecko'); 
 b.IsSafari = b.s.Contains('safari'); 
 b.IsOpera = b.s.Contains('opera'); 
 b.IsMac = b.s.Contains('macintosh'); 
 b.IsIELike = (b.IsIE || b.IsOpera); 
 b.IsGeckoLike = (b.IsGecko || b.IsSafari); 
}) (Browser); 
function oAjax () { 
 this.req = null; 
 this.url = ''; 
 this.content = ''; 
 this.type = 'text'; 
 this.encode = ''; 
 this.asyn = true; 
 this.action = 'get'; 
 this.error = false; 
} 
oAjax.prototype.init = function () { 
 if (window.XMLHttpRequest) { 
 this.req = new XMLHttpRequest(); 
 } 
 else if (window.ActiveXObject) { 
 // isIE = true; 
 try { 
 this.req = new ActiveXObject("Msxml2.XMLHTTP"); 
 } 
 catch (e) { 
 try { 
 this.req = new ActiveXObject("Microsoft.XMLHTTP"); 
 } 
 catch(e) { 
 this.req = false; 
 } 
 } 
 } 
 var self = this; 
 if (this.req) { 
 this.req.onreadystatechange = function () {self.listener()}; 
 } 
}; 
oAjax.prototype.listener = function () { 
 if (this.req.readyState == 4) { 
 if (this.req.status == 200) { 
 // right 
 try { 
 this.callback(Browser.IsIE && this.encode == 'gb2312' ? oAjax.gb2utf8(this.req.responseBody) : (this.type == 'text' ? this.req.responseText : this.req.responseXML)); 
 } 
 catch (e) { 
 this.halt('[callback] ' + e.name + ':' + e.message); 
 } 
 } 
 else { 
 // error 
 this.halt('[callback error] ' + this.req.status); 
 } 
 } 
}; 
oAjax.prototype.send = function (url) { 
 this.init(); 
 url = this.url = url || this.url || ''; 
 this.content = !!this.content ? this.content : ''; 
 this.encode = this.encode ? this.encode.toLowerCase() : ''; 
 this.asyn = this.asyn == undefined ? true : !!this.asyn; 
 this.action = (this.action == undefined || this.action == 'get') ? 'Get' : 'Post'; 
 this.error = this.error == undefined ? false : !!this.error; 
 if (! url && this.error) { 
 alert('Ajax请求URL不能为空。'); 
 return; 
 } 
 try { 
 this.req.open(this.action, url, this.asyn); 
 } 
 catch (e) { 
 this.halt('[open] ' + e.name + ':' + e.message); 
 return; 
 } 
 try { 
 this.req.setRequestHeader('Connection', 'close'); 
 this.req.setRequestHeader('Accept-Encoding', 'gzip, deflate'); 
 this.req.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded' + (this.encode ? ';charset=' + this.encode : '')); 
 if(this.req.overrideMimeType && this.encode) { 
 this.req.overrideMimeType('text/xml' + (this.encode ? ';charset=' + this.encode : '')); 
 } 
 this.req.send(this.content); 
 } 
 catch (e) { 
 this.halt('[open] ' + e.name + ':' + e.message + '\n** 检查是否为跨域访问。'); 
 } 
}; 
oAjax.prototype.callback = function (content) { 
 //alert(content); 
}; 
 // abort 
oAjax.prototype.abort = function () { 
 this.req.abort(); 
}; 
oAjax.prototype.halt = function (description) { 
 this.error && alert(description); 
}; 
// gb2312 to utf8 
oAjax.gb2utf8 = function (data) { 
 var glbEncode = []; 
 gb2utf8_data = data; 
 execScript("gb2utf8_data = MidB(gb2utf8_data, 1)", "VBScript"); 
 var t = escape(gb2utf8_data).replace(/%u/g,"").replace(/(.{2})(.{2})/g,"%$2%$1").replace(/%([A-Z].)%(.{2})/g,"@$1$2"); 
 t = t.split("@"); 
 var i=0, j = t.length, k; 
 while(++i < j) { 
 k = t[i].substring(0,4); 
 if(!glbEncode[k]) { 
 gb2utf8_char = eval("0x" + k); 
 execScript("gb2utf8_char = Chr(gb2utf8_char)", "VBScript"); 
 glbEncode[k] = escape(gb2utf8_char).substring(1, 6); 
 } 
 t[i] = glbEncode[k] + t[i].substring(4); 
 } 
 gb2utf8_data = gb2utf8_char = null; 
 return unescape(t.join("%")); 
} 
*/
核心代码
 代码如下:
 var b= xmlhttp.responseText; 
 var obj = eval("("+b+")"); 
 document.getElementById('fedbk').innerHTML=obj.a; 
 document.getElementById('fedcount').innerHTML=obj.b; 
 document.getElementById('feedcounttop').innerHTML=obj.b;