JAVASCRIPT: Divieto Di Selezionare

<script language="Javascript">
<!-- Inicio
function disableselect(e){
return false
}
function reEnable(){
return true
}
document.onselectstart=new Function ("return false")
if (window.sidebar){
document.onmousedown=disableselect
document.onclick=reEnable
}
// Fin -->

</script>