.yh_tt_div {

 padding: 10px; 
 border: 1px solid #ff6600; 
}

.yh_tooltip {
 font-size: 11px; 
 font-family:Arial, Helvetica, sans-serif;
/* font-face: arial,helvetica,sans-serif;*/
}

.tt_header {
 position: relative;
 width: 150px;
 height: 19px;
 margin-bottom: 3px;
}

.tooltip {
 display: none;
}