html,body { height: 101%; }
#main {width:800px; margin:0 auto; text-align:left; min-height:100%;}
* html #main{height:99.9%;}

#header {height:300px;}
#header, #content, #footer { font-size:0.8em;}

.col_1, .col_2, .col_3, .column1, .column2, .column3 { float:left;}