.rollDivFade
{ 
  position:relative;
}

.rollDivFade img
{
  position:absolute;
  top:0;
  left:0;
  width:inherit;
  height:auto;
  opacity:1;
  -webkit-transition: opacity 1s ease-in-out;
  -moz-transition: opacity 1s ease-in-out;
  -o-transition: opacity 1s ease-in-out;
  transition: opacity 1s ease-in-out;
}

.rollDivFade img.prima
{
  position:relative;
  display:block;
}

.rollDivFade img.nonVis
{
  opacity:0;
}