Forum Moderators: open
Thanks!
<a href="whatever" onclick="window.dontbotherme=true;"> external link </a>
you might also try using onmousedown instead of onclick.
<body onunload="if(!window.dontbotherme){showthankyou();return false}" />
be careful that your onunload doesn't actually interfere with people leaving your page; and I'd also be wary of how popup blockers intercept this.
please report back here to let us know how it goes, K?