html { margin: 0; padding: 0 }
body    { font-size: 90%; text-align: center; margin: 0px; padding: 0px }
#main    { font-size: 90%; line-height: 150%; text-align: left; margin-right: auto; margin-left: auto; width: 640px }
#main73leftblock      { float: left; margin-right: 5px; width: 400px }
#main73rightblock    { float: right; width: 220px }
#main37leftblock      { visibility: hidden; display: none;}
#main37rightblock        { width: 640px }
#main343leftblock   { float: left; margin-top: 5px; width: 160px }
#main343centerblock   { float: left; margin-top: 5px; margin-left: 15px; width: 370px }
#main343rightblock   { float: right; margin-top: 5px; width: 170px }