var menuTop = 45;
var menuLeft = 400;

var domSMenu = null;
var oldDomSMenu = null;
var t = 0;
var lDelay = 3;
var lCount = 0;
var pause = 100;

function popMenu(menuNum){
   if (isDHTML) {
   ///// Sets the previous menu's visibility to hidden
   t = 2;
   if (oldDomSMenu) {
      oldDomSMenu.visibility = 'hidden';
      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) + 5;
  var menuTop = (domMenu.offsetTop) + (domMenu.offsetHeight) + 5;
}
if (isLayers) {
  var menuLeft = document.layers[idMenu].layers[idMenuOpt].pageX - 5;
  var menuTop = domMenu.pageY + domMenu.clip.height - 5;
}

///// Positions and shows the menu
if (oldDomSMenu != domSMenu) {
   domSMenu.left = menuLeft;
   domSMenu.top = menuTop;
   domSMenu.visibility = 'visible';
   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.visibility = 'hidden';
  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); }
    }
}