var currentSlide=1;
var index=2;
function fade(){
	document.getElementById("slide"+currentSlide).style.opacity=
		parseFloat(document.getElementById("slide"+currentSlide).style.opacity)+0.025;
	if(parseFloat(document.getElementById("slide"+currentSlide).style.opacity)<1)
		setTimeout("fade()",25);
}
function nextSlide(){
	if(++currentSlide>nSlides)
		currentSlide=1;
	document.getElementById("slide"+currentSlide).style.zIndex=index++;
	document.getElementById("slide"+currentSlide).style.opacity="0.0";
	fade();
	setTimeout("nextSlide()",5000);
}
setTimeout("nextSlide()",5000);