.searchResults .ui-state-default .ui-grid-ico-sort.ui-icon
{
    background-image: url("../images/ui-icons_cd0a0a_256x240.png");
}

.searchResults .ui-jqgrid .ui-icon-asc, .searchResults .ui-jqgrid .ui-icon-desc
{
    height:12px;
    margin-top:0px;
}

.searchResults .ui-state-disabled.ui-icon-desc, .searchResults .ui-state-disabled.ui-icon-asc
{
    display: none;
}

<span class="s-ico" style="display: none;">
     <span class="ui-grid-ico-sort ui-icon-asc ui-state-disabled ui-icon ui-icon-triangle-1-n ui-sort-ltr" sort="asc" />
     <span class="ui-grid-ico-sort ui-icon-desc ui-state-disabled ui-icon ui-icon-triangle-1-s ui-sort-ltr" sort="desc" />
</span>

.ui-icon { width: 16px; height: 16px; background-image: url(images/ui-icons_222222_256x240.png)/*{iconsContent}*/; }
.ui-icon-triangle-1-n { background-position: 0 -16px; }
.ui-icon-triangle-1-s { background-position: -64px -16px; }