table.sort thead tr .header {
background-image:url(images/bg.gif);
background-position:left center;
background-repeat:no-repeat;
cursor:pointer;
padding-left:13px;
}
table.sort thead tr .headerSortUp {
background-image:url(images/asc.gif);
}
table.sort thead tr .headerSortDown {
background-image:url(images/desc.gif);
}