sitemdeki içerik kopyalanamasın?

<script language="JavaScript1.2">

//Disable select-text script (IE4+, NS6+)- By Andy Scott
//Exclusive permission granted to Dynamic Drive to feature script
//Visit http://www.dynamicdrive.com for this script

function disableselect(e){
return false
}

function reEnable(){
return true
}

//if IE4+
document.onselectstart=new Function ("return false")

//if NS6
if (window.sidebar){
document.onmousedown=disableselect
document.onclick=reEnable
}
</script>