replace

I have a section of my site that uses HTMLArea to allow the users to manage content. For one certain section, they want all of their links to pop up in another window. I know they can use HTMLArea and add this code themselves but they don't want to get to the code side of it. Currently, I just pull out the entire contents and echo them to the screen: echo $sql->getField('content'); but now I need to replace each anchor tag from <A href="http://www.something.com/"> to <A href="javascript:pop('http://www.something.com/')"> I can easily use str_replace() to replace "<a href="javascript:pop( " but how do I add the last )? Hope this made sense. Thanks!