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
document.oncontextmenu=function(e){return   false;} 

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???的?值,是ASII?,?里99代表c? */
if (document.layers)
document.captureEvents(Event.KEYDOWN)
function gogo(e)
{ if (document.layers) {
if (e.which==hotkey&&travel){
 alert("操作??.或?是您按?了按?!");  } }
else if (document.all){
if (event.keyCode==hotkey&&travel){ alert("操作??.或?是您按?了按?!"); }}
}

document.onkeydown=gogo