disable right click

<script type="text/javascript">
<!--

// Disable Right Click Script

function IE(e)
{
if (navigator.appName == "Microsoft Internet Explorer" && (event.button == "2" || event.button == "3"))
{
return false;
}

}
function NS(e)
{
if (document.layers || (document.getElementById && !document.all))
{
if (e.which == "2" || e.which == "3")
{
return false;
}
}
}
document.onmousedown=IE;document.onmouseup=NS;document.oncontextmenu=new Function("return false");

//-->
</script>