function key(){ 
//if(event.shiftKey){ 
//window.close();} 
//½ûÖ¹shift 
if(event.altKey){ 
alert('½ûÖ¹CTRL-C¸´ÖƱ¾ÌùÄÚÈÝ');} 
//½ûÖ¹alt 
if(event.ctrlKey){ 
alert('½ûÖ¹CTRL-C¸´ÖƱ¾ÌùÄÚÈÝ');} 
//½ûÖ¹ctrl 
return false;} 
document.onkeydown=key; 
if (window.Event) 
document.captureEvents(Event.MOUSEUP); 
//swordmaple javascript article. 
//from www.jx165.com 
//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;} 
} 
function Click(){ 
alert('½ûÖ¹ÓÒ¼üÕ³Ìù±¾ÌùÄÚÈÝ'); 
window.event.returnValue=false; 
} 
document.oncontextmenu=Click;