Gap between Button Bar and bottom of simulator..?

[bhatia]

Hello friends,

I am new to this iphone dev. world.
Here is the problem I am facing:

I am getting space b/w my Bar Button and the bottom of simulator (shown in snapshot attached).

Application is to simply change page contents(present locally) on button click.

For this I am using a WebView control and a button, created that view using IB (shown in snapshot attached).

Stuck at the beginning :-(, hope someone will help.

Thanks in anticipation,
Amit Bhatia