function click() {
return false;}
function click1(){if (event.button==2) {return false; }}
function CtrlKeyDown(){
 if (event.keyCode==67&&event.ctrlKey)
 {
  clipboardData.setData('text','');
  return false; 
 }
}
document.onkeydown=CtrlKeyDown;
document.onselectstart=click;
document.onmousedown=click1;


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; // for IE5+ 
document.onmousedown = norightclick; // for all others