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;
	}
}

if (document.layers) {
	document.captureEvents(Event.MOUSEDOWN);
	document.onmousedown=clickNS4;
}
else if (document.all&&!document.getElementById) {
	document.onmousedown=clickIE4;
}
document.oncontextmenu=new Function("return false");

$('body').attr('onselectstart','return false');