var firsttime = -5;

function changeOpac(opacity, id) { 
	var object = document.getElementById(id).style; 
	object.opacity = (opacity / 100); 
	object.MozOpacity = (opacity / 100); 
	object.KhtmlOpacity = (opacity / 100); 
	object.filter = "alpha(opacity=" + opacity + ")"; 
	object.zoom = 1;
} 

function blendimage(divid, imageid, imagefile, millisec) { 
	var speed = Math.round(millisec / 10); 
	var timer = 0; 

	//set the current image as background 
	document.getElementById(divid).style.backgroundImage = "url(" + document.getElementById(imageid).src + ")"; 

	//make image transparent 
	changeOpac(0, imageid); 

	//make new image 
	document.getElementById(imageid).src = imagefile; 

	//fade in image 
	for(i = 0; i <= 100; i++) { 
		setTimeout("changeOpac(" + i + ",'" + imageid + "')",(timer * speed)); 
		timer++; 
	} 
} 

var slideCache = new Array(); 
function RunSlideShow(divid,imageid,imageFiles,displaySecs) { 

	var imageSeparator = imageFiles.indexOf(";"); 
	var nextImage = imageFiles.substring(0,imageSeparator); 

	changeOpac(0, imageid); 
	blendimage(divid,imageid,nextImage,500); 

	var futureImages= imageFiles.substring(imageSeparator+1,imageFiles.length)+ ';' + nextImage; 
	setTimeout("RunSlideShow('"+divid+"','"+imageid+"','"+futureImages+"',"+displaySecs+")",(displaySecs+firsttime)*1000); 
	firsttime = 0;
	
	// Cache the next image to improve performance. 
	imageSeparator = futureImages.indexOf(";"); 
	nextImage = futureImages.substring(0,imageSeparator); 
	if (slideCache[nextImage] == null) { 
		slideCache[nextImage] = new Image; 
		slideCache[nextImage].src = nextImage; 
	} 
}