.tooltip{width: 212px; color:#000; font-size:10px; text-decoration:none; text-align:center;}

.tooltip span.top{padding: 33px 12px 0; background: url(bt.png) no-repeat top; line-height:140%;}
.tooltip b.bottom{padding:3px 12px 15px;color: #00AEDA; background: url(bt.png) no-repeat bottom;}

*+html .tooltip span.top{background: url(bt.gif) no-repeat top;}
*html  .tooltip span.top{background: url(bt.gif) no-repeat top;}

*+html .tooltip b.bottom{background: url(bt.gif) no-repeat bottom;}
*html  .tooltip b.bottom{background: url(bt.gif) no-repeat bottom;}