var menuTop = 45;
var menuLeft = 400;

var domSMenu = null;
var oldDomSMenu = null;
var t = 0;
var lDelay = 3;
var lCount = 0;
var pause = 400;

function popMenu(menuNum){
 if (isDHTML) {
///// Sets the previous menu's visibility to hidden
  t = 2;
  if (oldDomSMenu) {
   oldDomSMenu.display = 'none'; 
   oldDomSMenu.zIndex = '0'; 
   t = 2; 
   lCount = 0;
  }

///// Defines the DOMs of the menu objects
  var idMenu = 'menuHead';
  var domMenu = findDOM(idMenu,0);

  var idMenuOpt = 'menuHead' + menuNum;
  var domMenuOpt = findDOM(idMenuOpt,0);  

  var idSMenu = 'menu' + menuNum;
  var domSMenu = findDOM(idSMenu,1);

///// Defines the positions of the sub-menus
 if (isID || isAll) {  
    var menuLeft = (domMenu.offsetLeft) + (domMenuOpt.offsetLeft) + 10;//- 6
    var menuTop = (domMenu.offsetTop) + (domMenu.offsetHeight) - 1;
   }
  if (isLayers) {
    var menuLeft = document.layers[idMenu].layers[idMenuOpt].pageX  + 10;//- 5
    var menuTop = domMenu.pageY + domMenu.clip.height ;//- 5
  }

///// Positions and shows the menu
  if (oldDomSMenu != domSMenu) { 
   domSMenu.left = menuLeft; 
   domSMenu.top = menuTop;
   domSMenu.display = 'inline';
   domSMenu.zIndex = '100';
   oldDomSMenu = domSMenu;
  }

///// Resets oldDom if it is the same as the current DOM
  else { oldDomSMenu = null; }
 }

////// Returns a 'null' value for non-DHTML Browsers 
 else { return null; }
}

function delayHide() {
///// Checks to see if there is a menu showing and whether 
///// the global variable 't' has been set to 0
    if ((oldDomSMenu) && (t == 0)) {

///// Hides the old menu, resets menu conditions, 
///// and stops the function running
        oldDomSMenu.display = 'none'; 
        oldDomSMenu.zIndex = '0';
        oldDomSMenu = null;
        lCount = 0; 
        return false;
    }

///// Interupts the function if another menu is opened
    if (t == 2) { lCount = 0; return false; }

///// Repeats the function adding 1 to lCount each time until 
///// lCount is equal to lDelay and then sets 't' to 0 so that 
///// the menu will hide when it runs again
    if (t == 1) { 
        lCount = lCount + 1;
        if (lDelay <= lCount) { t = 0; }
        if (lDelay >= lCount) { setTimeout('delayHide(' + t + ')',pause); }
    }
}