background-repeat: repeat|repeat-x|repeat-y|no-repeat ;
div{ background-image:URL(back.gif); background-repeat:repeat; height:160px; width:50%; }
div{ background-image:URL(back.gif); background-repeat:repeat-x; height:160px; width:50%; }
div{ background-image:URL(back.gif); background-repeat:repeat-y; height:160px; width:50%; }
div{ background-image:URL(back.gif); background-repeat:no-repeat; height:160px; width:50%; }