.updatePanelBackground
{    
    filter: alpha(opacity=60);
    opacity: 0.7;
    display: none;        
    border-width: 1px;
    border-style: solid;
    background-color: #cccccc;    
    position: absolute;
    top: 0px;
    left: 0px;
    width: 100%;
    height: 100%;    
    z-index:5;  
}
.updateProgress /* Modificado por david */
{
    border: 1px solid #000000;
    background-color: White;
    padding: 10px;
    width: 250px;
    height: 95px;
    position:absolute;
    top:45%;  
    left:40%;
    text-align:center;      
}