TalkPHP - Form validation help

This is my php code:

PHP Code:


		
			
    if (!eregi ('^[[:alnum:]][A-Za-z0-9_.,-/ +-]{3,}$', stripslashes(trim($_POST['fMessage'])))) {

It will be the validation code for a message field on a contact form. I want users to be able to type A-z,Ä,Å,Ö,ä,å,ö, and normal punctuation chars. I also want users to be able to do line breaks (press enter so they get to the next line on the same field). Other wise they will get an error message.

Thanks for help.

-3gg1