.modo_visivel {
visibility: visible;
overflow: auto;
font-size:10px;
font-family:Verdana, Arial, Helvetica, sans-serif;
color:#666666;
height:38px;
line-height:38px;
text-align:center;
}

.modo_invisivel {
visibility: hidden;
height:0px;
overflow: auto; 
font-size:10px;
font-family:Verdana, Arial, Helvetica, sans-serif;
color:#666666;
text-align:center;
}