#leftcolumn { 
 margin: 10px 0px 10px 0px;
 padding: 10px;
 width: 578px;
 float: left;
}
#rightcolumn { 
 float: right;
 margin: 10px 0px 10px 0px;
 padding: 10px;
 width: 300px;
 display: inline;
 position: relative;
}
#leftcolumn2 { 
 margin: 10px 0px 10px 0px;
 padding: 10px;
 width: 578px;
 float: left;
}
#rightcolumn2 { 
 float: right;
 margin: 10px 0px 10px 0px;
 padding: 10px;
 width: 300px;
 display: inline;
 position: relative;
}