Fixes jquery-archive#1077, fixes jquery-archive#2683 — Reverts fixed positioning to hide .ui-collapsible-heading-status (added in commit #c94c6bf). Uses ‘top: -9999px’ to hide element in lieu of ‘left: -9999px’, so as not to trigger Firefox 7’s ellipsis bug.

Author: Wilto

css/structure/jquery.mobile.collapsible.css

@@ -10,7 +10,7 @@
 .ui-collapsible-heading a span.ui-btn { position: absolute; left: 6px; top: 50%; margin: -12px 0 0 0; width: 20px; height: 20px; padding: 1px 0px 1px 2px; text-indent: -9999px; }
 .ui-collapsible-heading a span.ui-btn .ui-btn-inner { padding: 10px 0; }
 .ui-collapsible-heading a span.ui-btn .ui-icon { left: 0; margin-top: -10px; }
-.ui-collapsible-heading-status { position: fixed; top: 0; left:-9999px; }
+.ui-collapsible-heading-status { position: absolute; top: -9999px; left:0px; }
 .ui-collapsible-content {
 	display: block;
 	margin:  0 -8px;