REG_EMPTY error

Hi all, I'm getting the following error when I try to load complex web pages with a version of Hans Anderson's class.browser that I've modified to translate relative links to absolute links (as well as images, flash object / embed links). It's going to be part of a larger templating class (I'm going to merge it into Stefan Bocskai Quicktemplate.) In any case, here's the error I'm getting: Warning: REG_EMPTY:?empty (sub)expression in c:\foxserv\www\browser.class\class.browser.php on line 388 On line 388, I'm doing an eregi_replace: $absolute_links[] = eregi_replace($r[1], $this_url, $array[$i]); I'd appreciate some help if anyone's run into this problem before. Thanks, Aral :)