var message="";
var isnn,isie

if(navigator.appName=='Microsoft Internet Explorer')isie=true;
if(navigator.appName=='Netscape')isnn=true;

function clickIE() {
	if (document.all) {
		(message);
		return false;
	}
}
function clickNS(e) {
	if (document.layers||(document.getElementById&&!document.all)) {
		if (e.which==2||e.which==3){
			(message);
			return false;
		}
	}
}
function disableselect(e){
	return false
}
function reEnable(){
	return true
}
if (window.sidebar){
	document.onmousedown=disableselect
	document.onclick=reEnable
}
function key(k){
	if(isie){
		if(event.keyCode==17 || event.keyCode==18 || event.keyCode==93) {
			return false;
		 }
	}
	if(isnn){
		return false;
	}
}
document.oncontextmenu=new Function("return false");
document.onselectstart=new Function ("return false");
document.onkeydown=key;