What determines window height for Yahoo weather widget

Yahoo can be accessed via the weather binding.
This is working for me, however, I was wondering what determines the height of the weather widget; that is the weather being displayed via the .html file.

It has the minimum height required to display all its information, and hence, sticks to the minimum frame size via browser.

But, when viewed on iPhone, that frame is bigger, and even bigger, both as in longer than it is in the browser.

Any ideas how to fix this?