.tab1{
	text-align: left;
  width: 100%;
  height: 100%;
}

a.collegamentoImg {
  width:100px;
  height:40px;
	background-image: url(../Images/Access1.gif);
  display: block;
  border: 0;
	color: Window;
	text-decoration: none;
}

a.collegamentoImg:hover {
    background-image: url(../Images/Access2.gif);
}