2 field search or drop down menu

[robiorobio]

This might be able to be done in just simple HTML - I need to assemble a drop down menu or searchbar script which consists of two fields (e.g. yellowpages.ca - what? where?). The query options will be presented as they type (just like yellowpages or google) which will be specified in the script as to what possible queries show up. When the user selects one of the queries in the first field this will define a url. (e.g. if the query option is programming in the first field this will take them to http://www.programming.com - once they press the go/search button. Although there is a second field which will represent anyother variable (location). So if user chooses Alabama in the second field that will specify a continuation url such as "/Alabama". So when user chooses programming and Alabama in the 2 seperate fields they will be taken to http://www.programming.com/alabama/. These fields will also be able to work solely as the first field will be a url which they can link to with only 1 field specified. Also the second field will work as well, as long as a folder by that specific name is setup on that domain (www.exampledomain.com/Alabama) . I am sure this code is fairly simple to construct but after 2 days of research and searching I haven't been able to put the function behuind the script - I got it to look the way I want I just havent figured out how I can make them work together. Any suggestions would be appreciated - Thanks.
Rob