clicking away the overlay by clicking outside of it also works with url

parts/templates/partsearch.html

@@ -37,7 +37,7 @@
       </tr>
     </table>
     <h3 id="no-results">No results.</h3>
-    <div class="shadow" onclick="overlay_out();update_url();"></div>
+    <div class="shadow" onclick="overlay_out();update_url(0);"></div>
   	<div class="overlay">
       <h2>Part Details</h2>
       <div id="info-container">