ul.buttons {float:left; height:21px; list-style-type:none; padding:0px; margin:0px; margin-right:6px; border:1px solid #919191; margin-bottom:4px}
ul.buttons li {float:left; height:21px; padding:0px; margin:0px;}

ul.buttons li a span {width:24px; height:21px; display:block}

ul.buttons li a#b span {background:url(/images/edit/b.gif) no-repeat}
ul.buttons li a#b:hover span {background:url(/images/edit/b_.gif) no-repeat}
ul.buttons li a#i span {background:url(/images/edit/i.gif) no-repeat}
ul.buttons li a#i:hover span {background:url(/images/edit/i_.gif) no-repeat}
ul.buttons li a#s span {background:url(/images/edit/s.gif) no-repeat}
ul.buttons li a#s:hover span {background:url(/images/edit/s_.gif) no-repeat}
ul.buttons li a#u span {background:url(/images/edit/u.gif) no-repeat}
ul.buttons li a#u:hover span {background:url(/images/edit/u_.gif) no-repeat}