#leftcol, #middlecol, #middlerightcol, #rightcol  { float: left; margin: 12px .5% 0; display: inline }
#leftcol      { width: 53%; margin-left: 1.3% }
#middlerightcol { width: 43% }
#middlecol    { width: 21%; margin-top: 0 }
#rightcol     { width: 21%; margin-right: 1.3%; margin-top: 0 }

#header_bottom  {  }