Css dropdowns have no impact on a spiders ability to see your text anchors. Javascript generated dropdowns can cause problems.

If you have firefox then install the webdeveloper toolbar extension go to www.parabio.com and disable the stylesheet and you will see what the spider sees.

__________________
"I have not failed. I have found 10,000 ways that don't work" - Thomas Edison.
"The secret to creativity is knowing how to hide your sources" - Albert Einstein.