函数参数传入子函数不成功，请问怎么回事

Question

function getComPage(classid,id,pagenum){
     var url = '/e/ajax/index.php?';
     var params ='action=getComPage' +  '&classid=' + classid + '&id=' + id + '&pagenum=' + pagenum;
     url+=params;
     var functionName=function (){
        temp(classid,id,pagenum);      
      };
     makeRequest(url, functionName, "GET", '');    
}
function temp(classid,id,pagenum){
if(xmlHttp.readyState==4){
                if(xmlHttp.status==200){
                  if(xmlHttp.responseText!=0){
                    $(".comnav1").html(xmlHttp.responseText);
                    getComList(classid,id,pagenum);
                  }    
                  else {
                    $(".comnav1").html("");  
                  }
                }
                else if(xmlHttp.readyState!=4)
                {
                  loadING("#commentinfo");    
                }
            }
}