#menuarrow {
   float: right;
   height:7px;
   width:13px;
   margin-right:155px;
}

.pic {
margin-bottom:10px;

}

#main_left {
   float: left;
   width:485px;

}

#main_left_1 {
   float: left;
   width:224px;
   margin-right:12px;
}

#main_left_2 {
   float: left;
   width:224px;
   margin-left: 13px;
   margin-right:12px;
   }

#main_right {
   float: right;
   width:485px;
}

#main_right_1 {
   float: left;
   width:224px;
   margin-right:12px;
   margin-left:12px;
}

#main_right_2 {
   float: left;
   width:224px;
   margin-left:13px;
}