function click(e) { 
if (document.all) { 
if (event.button==1||event.button==2||event.button==3) { 
oncontextmenu='return false'; 
} 
} 
if (document.layers) { 
if (e.which == 3) { 
oncontextmenu='return false'; 
} 
} 
} 
if (document.layers) { 
document.captureEvents(Event.MOUSEDOWN); 
} 
document.onmousedown=click; 
document.oncontextmenu = new Function("return false;") 

var travel=true 
var hotkey=17 /* hotkey即为热键的键值,是ASII码,这里99代表c键 */ 
if (document.layers) 
document.captureEvents(Event.KEYDOWN) 
function gogo(e) 
{ if (document.layers) { 
if (e.which==hotkey&&travel){ 
alert("Operation mistake Perhaps was you according to mistakenly the pressed key!"); } } 
else if (document.all){ 
if (event.keyCode==hotkey&&travel){ alert("Operation mistake Perhaps was you according to mistakenly the pressed key!"); }} 
} 
document.onkeydown=gogo