function nrcIE(){ if (document.all){return false;} }

function nrcNS(e){ if (document.layers||(document.getElementById&&!document.all)){ if (e.which==2||e.which==3){ return false; } } } 
	if (document.layers){
		document.captureEvents(Event.MOUSEDOWN);
		document.onmousedown=nrcNS;
	}
	else {document.onmouseup=nrcNS;document.oncontextmenu=nrcIE; }
	document.oncontextmenu=new Function("return false");