var dom = document.getElementById?1:0;
var ns4 = document.layers?1:0;


function showMenu(name,number) {

 var umenu = 1;

 for (count = 1; count <= umenu; count++) {
 var content = name + count;
 var active = name + number;

  if(dom) {
   if(content == active) {
    document.getElementById(active).style.visibility = 'visible';
    document.getElementById(active).onmouseover = clearShut;
    document.getElementById(active).onmouseout = setShut;
   }
   else {
    document.getElementById(content).style.visibility = 'hidden';
   }
  }
  else if(ns4) {
   if(content == active) {
    document[active].visibility = 'show';
    document[active].onmouseover = clearShut;
    document[active].onmouseout = setShut;
   }
   else {
    document[content].visibility = 'hide';
   }
  }
 }
 first = name, sec = number;
 clearShut();
}


function setShut() { 

timer = setTimeout("shut(first,sec)", 500);
}


function clearShut() {

if(window.timer)
clearTimeout(timer);
}


function shut(first,sec) {

 var active = first + sec;

 if(dom)
 document.getElementById(active).style.visibility = 'hidden';
 else if(ns4)
 document[active].visibility = 'hide';
}