.main { width:780px;}
.min_width {width:expression(((document.documentElement.clientWidth || document.body.clientWidth) < 780)? "780px" : "100%"); min-width:780px;}
.min_height { width:0px; float:left;}
#header {}
#header .column{ width:50%;}
#header .column_1{ width:50%;}
#footer { height:62px;}
#footer .column{ width:50%;}
#footer .column_1{ width:50%;}

.column, .column_1 { float:left;}

/*---page---*/