function clickIE4(){
	if (event.button==2){
		return false;
	}
}

function clickNS4(e){
	if (document.layers||document.getElementById&&!document.all){
		if (e.which==2||e.which==3){
		return false;
		}
	}
}

function disableCopy()
{
	if (document.layers)
	{
		document.captureEvents(Event.MOUSEDOWN);
		document.onmousedown=clickNS4;
	}
	else if (document.all&&!document.getElementById)
	{
		document.onmousedown=clickIE4;
	}
	function f()
	{
		return false;
	}
	document.oncontextmenu = f;
	document.ondragstart = f;
	document.onselectstart = f;
	document.onkeypress = f;
}