.nihilo .dijitComboBox .dijitArrowButton .dijitArrowButtonInner {background:url("../images/spriteArrows.png") no-repeat left center; width: 11px;}.dj_ie6 .nihilo .dijitComboBox .dijitArrowButton .dijitArrowButtonInner {background:url("../images/spriteArrows.gif") no-repeat left center;}.nihilo .dijitComboBoxHover .dijitArrowButtonInner {}