Does somebody knows how to display a details information in a drop down box ?

I'm using a php&mysql, and i have a web page that search from a database information that the user request, but i need to format the output with a box details ...

example:

the user search for infomation about cars, (the database contains cars information) and then there is an option like this:

You look for cars ...

click here for the details (and here must appear a drop down box that show the information that the user request)

i hope you can help

thanks in advance. :)