I need a dropdown search option on the front page

[loveranger]

What plugin or module can I use to create a dropdown search option? Please check the URL below to find out exactly what I'm talking about:
http://mvpwheels.com/

I need the exact same type of search function on my front page. Any help would be MUCH appreciated.

Here is another website with the same search option:
http://www.goodyear.com.au/
http://www.jaxquickfit.com.au/tyre-stores

[jenkinhill]

Have a look at http://breakdesigns.net/extensions/custom-filters

[loveranger]

I'm looking for a free module.