var activeMenu = null;

var inMenu = 0;

var inRunningTimer = 0;

var onItem = 0;



function addEvent( el, evname, func )

{			

	if ( el.addEventListener )

		el.addEventListener(evname, func, true);

	else

		el.attachEvent("on" + evname, func);

};	



function deactivateCurrentMenu()

{

	if(activeMenu != null)

	{

		activeMenu.style.visibility = "hidden";

		activeMenu = null;

		inMenu = 0;

	}

}



function stopBubbling()

{

	// Stop the event from bubbling.

	if ( event.stopPropagation )

		event.stopPropagation();	    	

	else

		window.event.cancelBubble = true;

}



function openMenu(event, menuId)

{

	var menu = document.getElementById(menuId);



	if(activeMenu == menu)

	{

		onItem = 1; 

		stopBubbling();	

		return;

	}



 	deactivateCurrentMenu();

	menu.style.visibility = "visible";

	activeMenu = menu;

	onItem = 1; 

	stopBubbling();	

}



function leaveMenuItem()

{

 	onItem = 0;

	stopBubbling();	  

}



function overMenu()

{

	inMenu = 1;

	stopBubbling();

}



function closeOpenMenus()

{

	inRunningTimer = 0;

	if(!inMenu && !onItem)

	{

		if(activeMenu)

		{

			deactivateCurrentMenu();

		}

	}

}



function outMenu()

{

	inMenu = 0;

}



function documentMouseOver()

{

	if(!inRunningTimer && !inMenu && !onItem)

	{

		setTimeout("closeOpenMenus()", 500);

		inRunningTimer = 1;

	}

}



addEvent( document, "mouseover", documentMouseOver );