SECURITY: Multiple XSS in Special:ChangeStyle. Reported by Mesut Timur of Mavituna Security - thanks! Also removed my stand-in for ucfirst().
.mcePageBreak {display:block;border:0;width:100%;height:12px;border-top:1px dotted #ccc;margin-top:15px;background:#fff url(../img/pagebreak.gif) no-repeat center top;}