div.main_text_right {
    position: relative;
    margin-left: 0px;
    min-height: 300px;
}

div.main_text_left {
    position: relative;
    margin-right: 0px;
    min-height: 300px;
}

ul.category_menu li a {background-position: 2px 11px;}
ul.category_menu ul li a {background-position: 17px 11px;}
ul.category_menu ul ul li a {background-position: 35px 11px;}
ul.category_menu ul ul ul li a {background-position: 50px 11px;}