DIV.content {
 float:left;
 width:750px;
}
DIV.contentleft, DIV.contentcenter, DIV.contentright {
 width:249px;
 margin:0px 0px 0px 0px;
 float:left;
}
DIV.contentborder {
 clear:both;
} 
DIV.contentcenter {
 border-left:1px solid #f0f0f0;
 border-right:1px solid #f0f0f0;
}