.tbc_2012 { 
            background-color:white;visibility:hidden;display:none;position:absolute;left:0px;top:0px; 
}
.head_top {background-color:white;
visibility:hidden;
display:none;
position:absolute;
left:0px;top:0px;}.my_style {background-color:white;
visibility:hidden;
display:none;
position:absolute;
left:0px;top:0px;}