I use this for alternating rows in tables: http://docs.jquery.com/Tutorials:Zebra_Striping_Made_Easy To add the script to the page, I would suggest putting it in the Header of the Module. You can get to the Header in the Module Settings and expand Advanced Settings. That way your script won't be stripped out.

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I had the striping done I just couldn't put into the script tags. Thanks for the tip on the modules bit. I'll do it there.