.font10{font-family:Tahoma; font-size:10px;}
.font11{font-family:Tahoma; font-size:11px;}
.font12{font-family:Tahoma; font-size:12px;}
.fontweight{font-family:Tahoma; font-weight:bold}
.height20{height:20px;}
.height10{height:10px;}
.width15{width:15px}
.width680{width:680px}
.width173{width:173px}
.floatleft{float:left}
.floatright{float:right}
.clearfix{ clear:both}