function BindLessons(pid,id,t,p)
     {
        var ok=document.getElementById("result");
           
           
        
           var url="ReturnLessons.aspx?pid="+pid+"&id="+id;
              
            
           //创建xmlhttp对象
           var xhttp=makeRequest();        
          
           //判断状态
           xhttp.onreadystatechange=function()
           {
                if(xhttp.readyState == 4 && (xhttp.status==200 || window.location.href.indexOf("http")==-1))
                {	
                                
                    var result=xhttp.responseText;
                    
                    ok.innerHTML=result;
 
      
      
                }
          }          
                
                
               xhttp.open("GET",url,true);
               xhttp.send(null); 
               
               for(i=1;i<=30;i++)
                 {
                   var menu=document.getElementById("link_"+t+"_"+i);
                   if (menu!=null)
                   {
                    if (menu==p)
                    {
                        p.style.color="#00156C";
                    }
                    else
                    {
                        menu.style.color="";
                    }
                
                   }
                   else
                   {
                    break;
                   }
                 }
                
     }