#header {
 color: #316AC5;
 width: 774px;
 float: left;
 height: 170px;
 margin:0px;
 background: #fff;
 margin-left:-1px;
}
#leftcolumn {width:501px; margin-left: -3px; }
/*html>body #leftcolumn {width:501px; margin-left: -3px; border:inset #6600FF 1px;} */

#rightcolumn { 
 float: right;
 margin:0px;
 width:274px;
 position: relative;
 margin-left: -1px;
}
/*html>body #rightcolumn {width:274px; margin-left: -1px;} */