// JScript File

    function SetScrollDown()
    {
        var ctl=document.getElementById('dvContentMain'); //alert(ctl.offsetHeight);
        if(ctl==null)
            ctl=document.getElementById('mycustomscrollNo');
      
         if(ctl.offsetHeight>=360)
             ctl.id="mycustomscroll"; 
        else   
        {          
             ctl.id="mycustomscrollNo"; 
             //if(ctl.offsetHeight<=400)
               // ctl.style.height="400px";
            
             }
        //  alert(ctl.offsetHeight);      
    }