How do I suppress the address bar in mobile Safari?
You only need the first part of this code to do what you ask, but the rest may also be helpful.

// hide the browser chrome
&lt;meta name="apple-mobile-web-app-capable" content="yes" /&gt; 

//set the phone status bar style; can be grey, black, or black translucent
&lt;meta name="apple-mobile-web-app-status-bar-style" content="black" /&gt;

// set the viewport for iOS
&lt;meta content="minimum-scale=1.0, width=device-width, maximum-scale=0.6667, user-scalable=no" name="viewport" /&gt;

// set a custom icon for when a user bookmarks the app to the home screen
&lt;link rel="apple-touch-icon" href="/path/to/icon.png" /&gt;