Changing the format of node->title

Hi

I am writing a module that will be used to track clicks on title links in the teaser view. The problem is that I am can't figure out how to rewrite the URL for the node title in the teaser view. I thought that hook_nodeapi() might be useful for this, but it seems it is only useful for rewriting node_body.

I would prefer to do this without hacking any particular theme, since I would like this module to be compatible with all/most existing themes.

Any suggestions out there on how I could approach this?

Thanks