.zt {background: url(/images/dot.gif) 0 0 repeat-x; width: 100%;}
.zb {background: url(/images/dot.gif) 0 100% repeat-x;}
.zl {background: url(/images/dot.gif) 0 0 repeat-y;}
.zr {background: url(/images/dot.gif) 100% 0 repeat-y;}
.zbl {background: url(/images/abl.gif) 0 100% no-repeat;}
.zbr {background: url(/images/abr.gif) 100% 100% no-repeat;}
.ztl {background: url(/images/atl.gif) 0 0 no-repeat;}
.ztr {background: url(/images/atr.gif) 100% 0 no-repeat; padding:10px;}

/* mac hide \*/
.ztr{height:1%}
/* end hide*/