Need Gtalk Halks

Is there a Gmail Chat Javascript Shortcut/Bookmark which can be placed on the bookmark toolbar on firefox, and can be used to quickly message specific contacts in the Gmail Chat List. For those who use Gmail Chat and have it on all day and talk multiple times to a few specific
people in the day, its cumbersome to put their name in the Quick Contacts search field and then click on "chat" or "send offline chat" (for the times when u know they are invisible).

What I tried was using the javascipt open to open the popup link corresponding to an email address (the link that u get in the address bar when you popup a chat.

javascript:void(open('https://mail.google.com/mail/?ui=2&ik=7c2ea6ae3d&view=cw&fs=1&tf=1&ver=zpuf6AhpH1w&am=#xxxxx%40gmail.com'));

This works, but corrupts the gmail interface.

Any clues how this could be achieved?