var Mac = navigator.userAgent.indexOf("Mac") != -1 ? true : false;

function mdown(e)
{
	if (navigator.appName == "Microsoft Internet Explorer")
	{
		if (event.button == 2 || (Mac && (event.ctrlKey || event.keyCode == 91)))
		{
		window.alert("!!");
		return(false);
		}
	} 
	else if (navigator.appName == "Netscape")
	{
		if (e.which == 3 || e.modifiers == 2 || e.ctrlKey)
		{
		window.alert("!!");
		return(false);
		}
	} 
}

function noright()
{
	return (false);
}


	document.oncontextmenu = noright;

	if (document.all && (Mac || ! document.getElementById)) {
		document.onmousedown = mdown;
		document.onkeydown = mdown;
	} else if (document.layers) {
		window.captureEvents(Event.MOUSEDOWN | Event.modifiers | Event.KEYDOWN);
		window.onmousedown = mdown;
		window.onkeydown = mdown;
	} else if(navigator.userAgent.indexOf("Netscape6")!=-1){
			document.onmouseup = mdown; 
		document.onkeydown = mdown;
	}

		function winopen(url){
				win=window.open(url,"host","scrollbars=0,width=360,height=280");
		}