48737 Pop-up Search engine keyword

I'm looking for a Popup script. This popup script needs to work with IE.6 SP2 and Firefox. In this script I want to be able to display different pop up depend of the keyword use in the search engine (referrer). I build my own lists of keyword and for each list I must choose the pages to display in the popup. Example: People type lyrics in Google, he click on my website link, when the page is open the popup script look if lyrics is an associated keyword. If yes, the script open the popup with one of the lyrics dedicated page. If not, the script open the popup with one of the no keyword dedicated page Example of list: Lyrics, Lyric, music, song, rap, rock…. open [login to view URL] For each list of keyword I could provide most than 1 page (use rotation). Must work at least with Google, MSN, Yahoo, Voila (French search engine [login to view URL]) Unknown Keyword is the same as no keyword open one of the no keyword dedicated page Must easily display in the page by a simple JavaScript source Thanks