function ShowMenu(idmenu,lastId)
{
	var curId = "flmenu" + idmenu;
	if(lastId != 0){
		document.getElementById(lastId).style.visibility = "hidden";
	}
	lastId = 'floatmenu' + idmenu;
	document.getElementById(curId).style.visibility = "visible";
}
function HideMenu(idmenu,lastId)
{
	lastId = 0;
	document.getElementById(idmenu).style.visibility = "hidden";
}