var per = 4; //скорость "мерцания" картинки  (от 1 до 100)
 var speed=0.2;     
 var value = 1;

 var timerID;
 function l(ss){
	   di=document.images;
   di[ss].style.opacity = 0;
   di[ss].style.filter = 'alpha(opacity=' + 0 + ')';
	 }
function setOpacity(ss) {
  if (value<=10 )
  {
   value+=speed;
   di=document.images;
   di[ss].style.opacity = value/10;
   di[ss].style.filter = 'alpha(opacity=' + value*10 + ')';
   }
 
}
function effect(ss){
 
    di=document.images;
    di[ss].style.opacity = 0;
    di[ss].style.filter = 'alpha(opacity=' + 0 + ')';
    timerID = setInterval('setOpacity(\''+ss+'\')',per);
} 
function dl(ss){
	 clearInterval(timerID);
	 di=document.images;
	 value=0;
	 di[ss].style.opacity = 0;
     di[ss].style.filter = 'alpha(opacity=' + 0 + ')';
}