

<!-- 
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 
//--> 
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