Creating dynamic image links…

Thanks for all the help in advance…

I am trying to create templates in a test directory. In this template, I am trying to insert images into template pages, but they are listed in a directory in my WP root directory. For example, in my footer.php page, I am inserting an image located in my WP root directory: (.com/wp).

My question is, is there a markup that I can use so that when I merge the new theme to a different WP installation, I don’t have to go back and change all the image links?

Right now, all image links look like this:
<img src="testsite.com/wp/images/image.jpg">
But when I go and add the template to the live site, I end up having to change all the image links to:
<img src="livesite.com/wp/images/image.jpg">

I want to know if there is a way I can add something like the bloginfo tags so that all I have to do in my test site template is something like:
<img src="<?php bloginfo('wpurl'); ?>/images/image.jpg">
So that no matter where I put the template, it will always look to the WP directory for the images.

Thanks!