Javascript lib: UX: When whiteOutReportSuccess() is called on a whiteout over a miniPrompt, the miniPrompt and whiteout are now flown out together. Also, a bit of improvement to message box DOM object destruction code; this fixes problems with message boxes appearing below the shade when ajax auth is done 3 or more times in one page load.

.panel_wrapper {height:85px;}
.panel_wrapper div.current {height:85px;}

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