问个脚本问题

var httpxml;
    //创建对象
    function creathttpxml()
    {
    
        if(window.ActiveXObject)
        {
            httpxml=new ActiveXObject("Microsoft.XMLHTTP");
        
        }
        else if(window.XMLHttpRequest)
                {
                    httpxml=new XMLHttpRequest();
                
                }
    
    
    }
    //调用
    function getdata()
    {
        creathttpxml();
        
        httpxml.onreadystatechange=fangfa;
       var  txtcon=document.getElementById("txt1").value+"|"+document.getElementById("txtname").value;
        httpxml.open("post","xmlcr.aspx?con="+escape(txtcon),false);
        
        httpxml.send(null);
    
    
    
    }
    function fangfa()
    {
    //是否完成状态
        if(httpxml.readystate==4)
        {
        //判断是否执行成功
            if(httpxml.status==200)
            {
             //alert(httpxml.responsetext);
             qiege(httpxml.responsetext);
           //  document.getElementById("div").innerText=httpxml.responsetext;
            }
        
        }
     }    function qiege(data)
    {
        
      // alert(data);
           var all;
           debugger
      //  for(i=0;i<data.split('@').length-1;i++)
       // {
        
         // all+=data.split('@')[i];
          //alert(all);
         // jixu(all);
     
       // }
      document.getElementById("div").innerHTML=data;
        var s=document.getElementById("mTwo_input_month");
       var today=new Date();
      
        s.options[today.getMonth()].selected=true;
      //document.getElementById("name").innerHTML=window.location.host;
    }
    
    function jixu(shu)
    {
    var xx;
  
//        for(j=0;j<shu.split('|').length;j++)
//        {
//        
//            xx+=shu.split('|')[j];
//             
//              if(j=shu.split('|').length-1)
//              {
//              
//              }
//              else
//              {
                wrstr+="<table><tr>";
                wrstr+="<td>"+shu.split('|')[0];
                wrstr+="</td><tr><td>"+shu.split('|')[1];
                wrstr+="</td></tr></table>";
//              }
//              
//        }
       document.getElementById("div1").innerHTML=wrstr;
      
    
    }  怎么调试？