<p>On a web page that is to be displayed on an iPhone, is there a way to get the number pad to come up when the user taps in the field, instead of the qwerty keypad? </p>

<p><a href="http://www.bennadel.com/blog/1197-Defaulting-To-The-Numeric-Keyboard-On-The-iPhone.htm" rel="nofollow noreferrer">This guy says here's how to do it</a>, but as of 2.0, this "feature" was disabled.  </p>

<p>I'm guessing there's some fancy javascript to employ to get around this limitation?  </p>

Yes, this used to be possible by including the word "zip" in your text field's name attribute. Unfortunately, Apple seems to have removed this in 2.0 and later. I suggest you file a bug.