203227 Skype Button/Affiliate Program

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Project Description:
This is probably a simple bit of code, but I need someone to figure out how edit the skype button code in this manner:

Background for those that don't know:

1. Anyone who wants to add a Skype Button on their website can do so for free (inviting people to call them via Skype)

2. When a person clicks on the button, Skype uses JS to check to see if the person has skype on their computer. If they don't, it send them to a download page to download skype.

What I need:

I am a Skype Affiliate and need someone to integrate it so that if a person doesn't have Skype on their computer, the user is sent to the Skype download page via my affiliate code - that way I get credit for any future purchases (as permitted by their affiliate program).

I'm sure this is a simple piece of code - certainly correct me if I'm wrong.

Here's the code by the way:

Skype 'Skype Me™!' button
<script type="text/javascript" src="http://download.skype.com/share/skypebuttons/js/skypeCheck.js"></script>
<a href="skype:username-goes-here?call"><img src="http://download.skype.com/share/skypebuttons/buttons/call_green_white_153x63.png" style="border: none;" width="153" height="63" alt="Skype Me™!" /></a>

Need this ASAP!

Skills required:
Anything Goes, Java, Javascript
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