need instant messenger addon to site. PHP/mysql/javascript - easy job

I have a social network site. I need an instant messenger feature that's javascript based, or java based, I don't care. it will have 2 columns. left column is where the text will go. right column will have the users online. at the bottom section is where they enter the text. plus they can add smilies or font color to their messages. and a send button. This is a standard instant messenger like yahoo messenger or aim. we also have groups on our site that consists of friends, family. so users can filter out which group can send them messages. PLEASE SEE THE ATTACHMENT. I already made the mockup HTML pages so you will have a template to design from. just insert the code into the template. Pretty easy job. payment made via GAF escrow. Payment released once project completes and works 100% on my site. Need test server so I can see progress. This is a pretty easy job, I need it in about 3-5 days.