SEARCH URL QUERY OR placeholder ???

Right I don’t know which name to give to my question but you will understand me and I hope help me.

Because my (cgi page) don’t have the option to keep the search query in the search result template page I need your help.

Here is an example with AutoTrader.co.uk
When you click this link you go to the result page which keep the search query – in this link we search for – ALFA ROMEO 145 BETWEEN 1000 AND 5000 AND POST CODE IS w13 0np
[url]http://atsearch.autotrader.co.uk/WWW/cars_search.asp?modelexact=1&lid=search_used_cars_full&make=ALFA+ROMEO&model=145&variant=&keywords=&min_pr=1000&max_pr=5000&mileage=&agerange=&postcode=w13+0np&miles=40&max_records=50&source=0&photo=1&sort=3&ukcarsearch_full=SEARCH[/url]

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For now I can do it using javascript like here:
[url]http://www.bodytouch.co.uk/advanced_search_result.php?keywords=Sydney[/url]

with text field – as you can see the result template parse the word “Sydney” in the search box.

I REALLY NEED YOUR HELP GUYS, I WANT TO FIND A WAY TO DO THE FIRST EXAMPLE – WITH NOT ONLY TEXT FIELD BUT – DROPDOWN, CHECKBOX…ETC.

Thanks a lot.

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