var opacite_1=-25;
var opacite_2=-75;
 
function fadePic(){		
  opacite_1+=2;
  opacite_2+=2;
  
  if (opacite_1 <= 100) {
    document.getElementById("spaffySpecial_1").style.opacity=opacite_1/100;
  }
  
  if (opacite_2 <= 100) {
    document.getElementById("spaffySpecial_2").style.opacity=opacite_2/100;
  }
}
setInterval(function(){fadePic();},50)