Disable right click script and no alert

// JavaScript Document
<script type="text/javascript" language="JavaScript1.2">
/**Start hiding from IE Mac */
<!-- // Begin
//Disable right click script and no alert
var message="";
///////////////////////////////////
function clickIE() {if (document.all) {(message);return false;}}
function clickNS(e) {
if (document.layers||(document.getElementById&&!document.all)) {
if (e.which==2||e.which==3) {(message);return false;}
}
}
if (document.layers){document.captureEvents(Event.MOUSEDOWN);document.onmousedown=clickNS;}
else{document.onmouseup=clickNS;document.oncontextmenu=clickIE;}
document.oncontextmenu=new Function("return false")
// End -->
/**Stop hiding from IE Mac */
</script>
insert this script in &lthead>