Add folder hierarchy collapsing.

svncommit

2008-08-28 f5aa16541e6901d2fc543f9044be1c898365b61e

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.panel_wrapper {height:85px;} 
.panel_wrapper div.current {height:85px;} 
 
/* IE */ 
* html .panel_wrapper {height:100px;} 
* html .panel_wrapper div.current {height:100px;}