.chanp_left_c_bt h1 em{
  background: url(../images/add.jpg) no-repeat center;width:20px;

}
.chanp_left_c_bt h1 em.proem{
  background: url(../images/reduce.jpg) no-repeat center;width:20px;

}

.chanp_left_c_bt h1{margin-left:28px;padding:0;text-indent: 22px;background:none;}