function showUrl(url) {
	document.location = url;
}
 
function isset(variable) {
	if (typeof(window[variable]) != "undefined") {
		return true;
	} else {
		return false;
	}
}

var isNS = (navigator.appName == "Netscape") ? 1 : 0;

if (navigator.appName == "Netscape") {
	document.captureEvents(Event.MOUSEDOWN||Event.MOUSEUP);
}

function mischandler() {
	return false;
}

function mousehandler(e) {
	var myevent = (isNS) ? e : event;
	var eventbutton = (isNS) ? myevent.which : myevent.button;
	if ((eventbutton==2) || (eventbutton==3)) {
		return false;
	}
}
	
function disableRightClick() {
	document.oncontextmenu = mischandler;
	document.onmousedown = mousehandler;
	document.onmouseup = mousehandler;
}

disableRightClick();