su php paprasciau:
<link rel="stylesheet" type="text/css" href="style<?= rand(1,2) ?>.css">



"Gipsakojis" <upal_acnulsia@gips.lt> wrote in message 
news:gu14pt$db8$1@trimpas.omnitel.net...
> "RQ" <profesionalus@gmail.com> wrote in message 
> news:gu13sm$bjq$1@trimpas.omnitel.net...
>> http://www.google.com/search?q=javascript+random+css+stylesheet
>
> pagaliau radau http://www.daniweb.com/forums/thread62265.html :)
> aciu kad padejote teisingai suformuluoti klausima gugliui.
>
> Gipsas
>