th.headerSortUp { 
    background-image: url(/js/themes/blue/asc.gif) !important; 
    background-color: #3399FF; 
}

th.headerSortDown { 
    background-image: url(/js/themes/blue/desc.gif) !important; 
    background-color: #3399FF; 
} 

th.header { 
    background-image: url(/js/themes/blue/bg.gif); 
    cursor: pointer; 
    font-weight: bold; 
    background-repeat: no-repeat; 
    background-position: center left; 
    padding-left: 20px; 
    border-right: 1px solid #dad9c7; 
    margin-left: -1px; 
}