Creating an Easy Print Button on Drupal Webforms
Have you ever wanted to add a simple Javascript print button to a webform so that users could print out all of their entered data? I had a need to do this today for a coworker. I thought about working up a custom module, trying to build a custom template file for the form that contained the additional button, but instead decided to store it as simply a "markup" component/question.

Basically you just add in the following code:
<div id="edit-actions" class="form-actions form-wrapper"><input id="edit-submit" class="form-submit" value="Print" name="print" onclick="window.print()" type="button" /></div>
This was tested on a D6 site, but the same idea should work perfectly on D7 sites. Enjoy!
