var openedMenu = '';

function ShowMenu(menuId) {
	HideMenu();
	var el = document.getElementById(menuId);
	if(el) { el.style.visibility = "visible"; }
	openedMenu = menuId;
	flag = false;
}

function HideMenu() { 
	if (openedMenu) { 
		if (document.getElementById(openedMenu)) { document.getElementById(openedMenu).style.visibility = "hidden"; }
	}
}

function rollItem(elementID, imagesPath, onORoff) { 
	image_type = (elementID.src).substring((elementID.src).length-3,(elementID.src).length);
	if(onORoff=="on") 	{ the_path=''+imagesPath+elementID.name+'_on.'+image_type; }
	if(onORoff=="off")	{ the_path=''+imagesPath+elementID.name+'_off.'+image_type; }
	elementID.src=the_path;
}