<!--
function AltDown() {
if (event.keyCode==122) {
alert("Sorry, but the F11 key does not have a function on this page.");
event.returnValue=false;
event.keyCode=0; }
if (event.keyCode==116) {
alert("Sorry, but the F5 key does not have a function on this page.");
event.returnValue=false;
event.keyCode=0; }
if (event.altKey)   { alert("Sorry, but the Alt key does not have a function on this page."); }
if (event.ctrlKey)  { alert("Sorry, but the Ctrl key does not have a function on this page."); }
//check the browser
var isnn,isie
if(navigator.appName=='Microsoft Internet Explorer') { isie=true; } 
if(navigator.appName=='Netscape') { isnn=true; } 
function right(e) { 
if (isnn && (e.which == 3 || e.which == 2 )) return false;
else if (isie && (event.button == 2 || event.button == 3)) { alert("Sorry, but the right button does not have a function on this page."); return false; } 
return true; }
if (document.layers) window.captureEvents(Event.MOUSEDOWN); 
if (document.layers) window.captureEvents(Event.MOUSEUP); 
document.onmousedown=right; 
document.onmouseup=right;
//-->