Advice about detecting css

[orion_rus]

Hello world i have a css placed on
mainsite.com/css/main.css
but then i moving to another directory my path to it became wrong( May be somebody knows any way to solve this problem?

[coopster]

Could you use $_SERVER [php.net]['DOCUMENT_ROOT'] to build the correct path?

[orion_rus]

yes i think i can)
Thank you very much