ما وظيفة هذا الكود

 td.spaceRow{background:#FFF url(http://i23.servimg.com/u/f23/15/13/67/04/f110.gif) repeat-x bottom;border-bottom:0 solid #d2d2d2;border-left:0 solid #d2d2d2;border-right:1px solid #d2d2d2;border-top:0 solid #FFF;color:#2a2a2a}.alt2,.alt2Active{background:#FFF url(http://i23.servimg.com/u/f23/15/13/67/04/f110.gif) bottom repeat-x;border:0 solid #EDEDED;color:#000}

    .blu,.blun{background-position:-68px -16px}.c{color:#000;text-align:center;text-shadow:0 1px 0 #b3b2b3}.clear{clear:both}