if (window.Event) document.captureEvents(Event.MOUSEUP);
function nocontextmenu() {
event.cancelBubble = true
event.returnValue = false;
return false;}
function norightclick(e) {
if (window.Event) {
if (e.which == 2 || e.which == 3)
return false;} 
else if (event.button == 2 || event.button == 3) {
event.cancelBubble = true
event.returnValue = false;
return false;}}
document.oncontextmenu = nocontextmenu;
document.onmousedown = norightclick;