cm=null;
    hide_delay=500;
    tstat=0;
    
    isNS4 = (document.layers) ? true : false;
    isIE4 = (document.all && !document.getElementById) ? true : false;
    isIE5 = (document.all && document.getElementById) ? true : false;
    isNS6 = (!document.all && document.getElementById) ? true : false;
    
    function switchDiv(objElement,bolVisible){
    if(isNS4||isIE4){
         if(!bolVisible) {
           objElement.visibility ="hidden"
         } else {
           objElement.visibility ="visible"
         }     
     } else if (isIE5 || isNS6) {
          if(!bolVisible){
             objElement.style.display = "none";         
          } else {
            objElement.style.display = "";        
            }
          }
    return 1;
    }
    
    function getPos(el,sProp) {
        var iPos = 0;
        while (el!=null) {
            iPos+=el["offset" + sProp]
            el = el.offsetParent
        }
        return iPos
    }
    
    function getelementbyid(myid) {
       if (isNS4){
            objElement = document.layers[myid];
         }else if (isIE4) {
            objElement = document.all[myid];
         }else if (isIE5 || isNS6) {
                 objElement = document.getElementById(myid);
         }
    return(objElement);
    }
    
    function show(el,m) {
     if (cm!=null) {
     switchDiv(cm,false);
     }
     if (m!=null) {
     m=getelementbyid(m);
     m.style.left = getPos(el,"Left")+"px";
     m.style.top =  getPos(el,"Top")+el.offsetHeight+"px";
     switchDiv(m,true);
     cm=m;
     }
    }
    
    function hidemenu() {
    timer1=setTimeout("show(null,null)",hide_delay);
    tstat=1;
    return 1;
    }
    
    function cancelhide() {
     if (tstat==1) {
     clearTimeout(timer1);
     tstat=0;
     }
    return 1;
    }