.main { width:60%;}
.min_width {width:expression(((document.documentElement.clientWidth || document.body.clientWidth) < 600)? "600px" : "80%"); min-width:600px;}


.f_l{ float:left;}


.col_box_2{ float:left;}


.col_box_1{ float:left;}


.col_3{ float:left;}


.col_2{ float:left;}


.col_1{ float:left;}
.f_r{ float:right;}

.content .col_1{width:280px; margin:0 -280px 0 0;}
.content .col_2{width:100%;}