http://www.grammarunderground.com/wp-content/plugins/collapsible-elements/xcelements.js?ver=3.3

1/*
2+----------------------------------------------------------------+
3|	WordPress Plugin: Collapsible Elements    								     |
4|	http://deuced.net/wpress/collapsible-elements/						     |
5|	File Information:																	             |
6|	- Collapsible Elements Javascript  												     |
7|	- wp-content/plugins/collapsible-elements/xcelements.js        |
8| This code is based on Arvind Satyanarayan example which        |
9| toggles the visibility of multiple  elements on a page         |
10| http://blog.movalog.com/a/javascript-toggle-visibility/        |
11+----------------------------------------------------------------+
12*/
13function xcollapse(id) 
14{ 
15      var ccommid = document.getElementById(id); 
16      if(ccommid !== null) {
17        if(ccommid.style.display == 'block') {
18        ccommid.style.display = 'none';
19        }
20      else { ccommid.style.display = 'block';
21        }
22      }
23}