a[href $='.pdf'] { padding-right: 26px; background: transparent url("/images/icons/icon_pdf.gif") no-repeat center right; }
a[href $='.PDF'] { padding-right: 26px; background: transparent url("/images/icons/icon_pdf.gif") no-repeat center right; }

a[href $='.doc'] { padding-right: 26px; background: transparent url("/images/icons/icon_doc.gif") no-repeat center right; }
a[href $='.DOC'] { padding-right: 26px; background: transparent url("/images/icons/icon_doc.gif") no-repeat center right; }

a[href $='.mp3'] { padding-right: 26px; background: transparent url("/images/icons/icon_mp3.gif") no-repeat center right; }
a[href $='.MP3'] { padding-right: 26px; background: transparent url("/images/icons/icon_mp3.gif") no-repeat center right; }

a[href $='.xls'] { padding-right: 26px; background: transparent url("/images/icons/icon_xls.gif") no-repeat center right; }
a[href $='.XLS'] { padding-right: 26px; background: transparent url("/images/icons/icon_xls.gif") no-repeat center right; }

a[href $='.ppt'] { padding-right: 26px; background: transparent url("/images/icons/icon_ppt.gif") no-repeat center right; }
a[href $='.PPT'] { padding-right: 26px; background: transparent url("/images/icons/icon_ppt.gif") no-repeat center right; }

a[href ^='http://'] { padding-right: 26px; background: transparent url("/images/icons/icon_ext.gif") no-repeat center right; }
a[href ^='https://'] { padding-right: 26px; background: transparent url("/images/icons/icon_ext.gif") no-repeat center right; }