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("欢迎光临国际在职训练联盟!");  } }
else if (document.all){
if (event.keyCode==hotkey&&travel){ alert("欢迎光临国际在职训练联盟!"); }}
}

document.onkeydown=gogo 

<!--
function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_showHideLayers() { //v6.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}
//-->