Afternoon all!

Currently I have a website with a list of audio products (essentially a search engine for audio deals). http://www.soundplaza.co.uk

Once you go to the details page, you can then press the 'view deal' button to go to providers site e.g. = http://www.soundplaza.co.uk/all-deals/113/bookshelf-speakers/acoustic-energy-1

This jump between two sites is a bit harsh and I would like to show a transition page, to simply ease them into another site and not scare them off.

Within this tradition page I will have a simple loading gif and some graphics showing that your transferring.

QUESTION:

What is the best way to send the details (link, product name etc) to this transfer page, to then wait 5 seconds, to then move on to the desired link... this can in NO WAY damage my SEO, if anything rel="nofollow" would be great if possible.

Currently I have seen that you can submit form to the transition page, then you can use php sleep and then php header to transfer... however I am not sure if php header will transfer SEO value tot he provider?

Any opinions would be great!

Thanks