var t;
var currentMenu;
var listaMenu = new Array();

/*modificare con aggiunta nuovi menu*/
listaMenu[0] = "menu3";
listaMenu[1] = "menu4";
/*listaMenu[0] = "menu0";
listaMenu[1] = "menu1";
listaMenu[2] = "menu2";
listaMenu[3] = "menu3";
listaMenu[4] = "menu4";*/
/************************************/

function showSubMenu(menu){
	//chiudi tutti menu prima
	for(i=0; i<listaMenu.length; i++){
		clearTimeout(t);
		hideMenuAction(listaMenu[i]);	
	}
	
	//****
	var parentId = "parent_" + menu;
	
	if (document.getElementById){ 
		//document.getElementById(menu).style.width = 500 - document.getElementById(parentId).style.width;
	   //document.getElementById(menu).style.left =  document.getElementById(parentId).style.left + document.getElementById(parentId).style.width - document.getElementById(menu).style.width;
       document.getElementById(menu).style.visibility = 'visible'; 
	}else if (document.all) {
		//document.all[menu].left =  document.all[parentId].left + document.all[parentId].width - document.all[menu].width;
		document.all[menu].visibility = 'visible'; 
	}else if (document.layers) {
		//document.layers[menu].left =  document.layers[parentId].left + document.layers[parentId].width - document.layers[menu].width;
		document.layers[menu].visibility = 'visible'; 
	}
}

function hideMenu(menu){
	currentMenu = menu;
	t = setTimeout("hideMenuAct()",500);
}

function keepMenuOpen(menu){
	clearTimeout(t);	
}
	
function hideMenuAct(){
	hideMenuAction(currentMenu);	
}

function hideMenuAction(menu){
	if (document.getElementById) 
       document.getElementById(menu).style.visibility = 'hidden'; 
    else if (document.all) 
        document.all[menu].visibility = 'hidden'; 
    else if (document.layers) 
       document.layers[menu].visibility = 'hidden'; 
}