removed image dimensions in demo page

Author: scottjehl

docs/toolbars/bars-fullscreen.html

@@ -22,7 +22,7 @@ <h1>Fullscreen fixed header</h1>
 
 	<div data-role="content">
 			<div class="content-primary">
-				<img src="images/photo-run.jpeg" width="640" height="480" alt="Photo Run">
+				<img src="images/photo-run.jpeg"  alt="Photo Run">
 
 		<p class="ui-body">This page demonstrates the "fullscreen" toolbar mode. This toolbar treatment is used in special cases where you want the content to fill the whole screen, and you want the header and footer toolbars to appear and disappear when the page is clicked responsively &mdash; a common scenario for photo, image or video viewers.</p>