var message="Please use your left mouse button to select a link !";
function click(e) {if (document.all) {if (event.button==2||event.button==3) {alert(message); return false;}}
else if (document.layers||document.getElementById) {if (e.which == 3) {alert(message); return false; }}}
if (document.layers) {document.captureEvents(Event.MOUSEDOWN); }document.onmousedown=click;