.icon-add  { 
  background-image: url('../png/add.png') !important; 
}
.icon-delete  { 
  background-image: url('../png/delete.png') !important;
}
.icon-edit  { 
  background-image: url('../png/edit.png') !important;
}
.icon-cancel  { 
  background-image: url('../png/cancel.png') !important;
}
.icon-ok  { 
  background-image: url('../png/ok.png') !important;
}
.icon-details  { 
  background-image: url('../png/showdetails.png') !important;
}
.icon-nodetails  { 
  background-image: url('../png/hidedetails.png') !important;
}