.combo-clear {  
  background-color: #E0ECFF;  
  width: 18px;  
  height: 20px;  
  overflow: hidden;  
  display: inline-block;  
  vertical-align: top;  
  cursor: pointer;  
  opacity: 0.6;  
  filter: alpha(opacity=60);  
  background: url('images/combo_clear.png') no-repeat center center;  
}  
.combo-clear-hover {  
  opacity: 1.0;  
  filter: alpha(opacity=100);  
  background-color: #eaf2ff;  
}