function SymError(){
	return true;
}

window.onerror = SymError;

var SymRealWinOpen = window.open;

function SymWinOpen(url, name, attributes){
	return (new Object());
}

window.open = SymWinOpen;

vType = ["none","block"];
function treeMenu(tName){
	tMenu = document.all[tName].style;
	tMenu.display = vType[tMenu.display.indexOf("none") + 1];
}