Protect Copy from Webpage

[Narayan]

Write the following Code

<script type=”text/JavaScript”>
//courtesy of hostcoding.com
function killCopy(e){
return false
}
function reEnable(){
return true
}
document.onselectstart=new Function (“return false”)
if (window.sidebar){
document.onmousedown=killCopy
document.onclick=reEnable
}
</script>


Thank you.

[kaushik.swe]

Why cant we use this on student's exam scripts?

By the way, Thank You.