wave - Very very nice idea. Good execution, great concept. I often have to do this, and hats off to you, coz I did not think of this.

One small suggestion, and I might be splitting hairs here, but maybe make the tabs on the top a little more prominent. I missed it the first time around. Nothing that you need to take care of, I just figured I would pen it down.

I also see that you are not checking the url to see if its valid (which is fine). It does bring up one problem and that is if I link to three HM links, they all show up as the same name in the tab. Maybe give an option to name the tab... ?

Update - Woops, ca98am79 had the same suggestion as me. Sorry. Did not see that prior to posting my comment