// JavaScript Document
// JavaScript for Menu Application

	var ActiveMenu = null;

	function hideActive() {  
	if (ActiveMenu !== null) {
		hideIt (ActiveMenu);
		ActiveMenu = null;
		}
		}

	function popMenu (M) {  //when popMenu fuction is called is shows the active menu.
		hideActive ();
		ActiveMenu = document.getElementById (M);
		showIt (ActiveMenu);
		}
		
	function hideIt(object) {  //sets visibility of object to hidden
		object.style.visibility="hidden";
		}
		
	function showIt(object) {  //sets visibility of object to visible
		object.style.visibility="visible";
		}