[class^="icon-"],
[class*=" icon-"] {
  font-family: 'fontello';
  font-style: normal;
  font-weight: normal;
/* fix buttons height */
  line-height: 1em;
/* you can be more comfortable with increased icons size */
/* font-zize: 120%; */
}

.icon-plus { *zoom: expression( this.runtimeStyle['zoom'] = '1', this.innerHTML = '+ '); }
.icon-plus-circle { *zoom: expression( this.runtimeStyle['zoom'] = '1', this.innerHTML = ' '); }