.main .col-left div.block-layered-nav.amshopby-collapse-enabled dl dt { 
    background: transparent url(../../images/ncr/customshopby/arrow-nav-down.png) 3px 11px no-repeat; 
} 
.main .col-left div.block-layered-nav.amshopby-collapse-enabled dl dt.amshopby-collapsed { 
    background: transparent url(../../images/ncr/customshopby/arrow-nav-right.png) 3px 11px no-repeat; 
}