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); }
						       }

}