// Browser Slide-Show script.
// With image cross fade effect for those browsers that support it.
// Script copyright (C) 2004 www.cryer.co.uk.
// Script is free to use provided this copyright header is included.
var slideCache = new Array();

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 + ")"; 
} 

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,100); 

var futureImages= imageFiles.substring(imageSeparator+1,imageFiles.length)+ ';' + nextImage; 
setTimeout("RunSlideShow('"+divid+"','"+imageid+"','"+futureImages+"',"+displaySecs+")",displaySecs*1000);

// 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; 
} }