option.disabled {
L222:  color: #999;
L223:  cursor: not-allowed;
L224:  text-decoration: line-through;
L225:}
L226:
L227:.daterangepicker select.monthselect, .daterangepicker select.yearselect {
L228:  font-size: 12px;
L229:  padding: 1px;
L230:  height: auto;
L231:  margin: 0;
L232:  cursor: default;
L233:}
L234:
L235:.daterangepicker select.monthselect {
L236:  margin-right: 2%;
L237:  width: 56%;
L238:}
L239:
L240:.daterangepicker select.yearselect {
L241:  width: 40%;
L242:}
L243:
...

.on('mouseenter.daterangepicker', 'td.available', $.proxy(this.hoverDate, this))
L418:            .on('change.daterangepicker', 'select.yearselect', $.proxy(this.monthOrYearChanged, this))
L419:            .on('change.daterangepicker', 'select.monthselect', $.proxy(this.monthOrYearChanged, this))
L420:            .on('change.daterangepicker', 'select.hourselect,select.minuteselect,select.secondselect,select.ampmselect', $.proxy(this.timeChanged, this))
L421:
L422:        this.container.find('.ranges')
...