regex replace href-content

Dear List, I´m writing a little framework with special features for my application. The content of my Website is in HTML-Pages from other users working with HTML-Editors. I parse the content in their <body> in my framework. now I have to replace the content of their links from <a href="test.html">test</a> to <a href="index.php?page=test.html">test</a>. It works fine with the following replacement. $body2 = preg_replace('/href="(.*?)"/i', 'href="index.php?page=$1"', $body); But if the content of their href´s is an external link (http:// at beginning) or a javascript-link (javascript: at beginning) I don´t want to do that. With (?<!http:\/\/) before a word I can say, if there is an http:// in front of, don´t replace. But it works only if I know the content of the link... like this. $body1 = preg_replace('/href="(?<!http:\/\/)www.test.com"/i', 'href="index.php?page=internal"', $body); I can´t figure out how to combine the two replacements to work... do you have any sugesstion? thanks for your help. christoph