dhtml slide in menu for webpage

Avg Bid (USD)
Project Budget (USD)
$30 - $100

Project Description:
I need to include a slide in dhtml menu on a certain area of a webpage. The html for both pages have already been created. However, I don't know how to make the inserted page (menu) invisible and then visible onmouseover. I have mockups of what i need that i can show to make it clearer.

Skills required:
Javascript, PHP
About the employer:
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