function hide_menu(what) {
	if (document.getElementById) {
		document.getElementById(what).style.visibility = "hidden";
	}
	else if (document.all) {
		document.all[what].style.visibility = "hidden";
	}
	else if (document.layers) {
		document.layers[what].visibility = "hidden";
	}
}

function show_menu(what) {
	if (document.getElementById) {
		document.getElementById(what).style.visibility = "visible";
	}
	else if (document.all) {
		document.all[what].style.visibility = "visible";
	}
	else if (document.layers) {
		document.layers[what].visibility = "visible";
	}
}

function handle_menu(action, names) {
	var aMenu, nMenuLen;

	aMenu = names.split(",");
	nMenuLen = aMenu.length;

	if (action == "pahel") {
		for (i = 0; i < nMenuLen; i++)
			hide_menu(aMenu[i]);
	}
	else if (action == "berel") {
  	for (i = 0; i < nMenuLen; i++)
			show_menu(aMenu[i]);
	}
}

function MM_openBrWindow(theURL, winName, features) {
  window.open(theURL, winName, features);
}