dojo.isSafari
<script src="../../js/dojo.js"></script>
defined in dojo/_base/_loader/hostenv_browser.js
Greater than zero if client is Safari or iPhone. 0 otherwise.
Examples
Example 1
if(dojo.isSafari){ ... }
Example 2
Detect iPhone:
if(dojo.isSafari && (navigator.userAgent.indexOf("iPhone")