/*****
Image Cross Fade Redux
Version 1.0
Last revision: 02.15.2006
steve@slayeroffice.com

Please leave this notice intact. 

Rewrite of old code found here: http://slayeroffice.com/code/imageCrossFade/index.html
*****/

window.addEventListener?window.addEventListener("load",so_init,false):window.attachEvent("onload",so_init);

var imgs = new Array(), zInterval = null, current=0, pause=false;
//var imgs2 = new Array(), zInterval2 = null, current2=0, pause2=false;

function so_init() {
	if(!document.getElementById || !document.createElement)return;

	imgs = document.getElementById("slideshow").getElementsByTagName("img");
	for(i=1;i<imgs.length;i++) imgs[i].xOpacity = 0;
	imgs[0].style.display = "block";
	imgs[0].xOpacity = .99;
	
	// sets inital delay of first transisition in ms
	setTimeout(so_xfade,8000);
	
	//// second slideshow
//	imgs2 = document.getElementById("slideshow2").getElementsByTagName("img");
//	for(i=1;i<imgs2.length;i++) imgs2[i].xOpacity2 = 0;
//	imgs2[0].style.display = "block";
//	imgs2[0].xOpacity2 = .99;
//	
//	// sets inital delay of first transisition in ms
//	setTimeout(so_xfade2,3000);
	
}

function so_xfade() {
	cOpacity = imgs[current].xOpacity;
	nIndex = imgs[current+1]?current+1:0;

	nOpacity = imgs[nIndex].xOpacity;
	
	// changes speed of fade, higher values increase speed
	cOpacity-=.03; 
	nOpacity+=.03;
	
	imgs[nIndex].style.display = "block";
	imgs[current].xOpacity = cOpacity;
	imgs[nIndex].xOpacity = nOpacity;
	
	setOpacity(imgs[current]); 
	setOpacity(imgs[nIndex]);
	
	if(cOpacity<=0) {
		imgs[current].style.display = "none";
		current = nIndex;
		// sets delay between each fade in ms
		setTimeout(so_xfade,8000);
	} else {
		setTimeout(so_xfade,50);
	}
	
	function setOpacity(obj) {
		if(obj.xOpacity>.99) {
			obj.xOpacity = .99;
			return;
		}
		obj.style.opacity = obj.xOpacity;
		obj.style.MozOpacity = obj.xOpacity;
		obj.style.filter = "alpha(opacity=" + (obj.xOpacity*99) + ")";
	}
	
}
// second slideshow
//function so_xfade2() {
//	cOpacity2 = imgs2[current2].xOpacity2;
//	nIndex2 = imgs2[current2+1]?current2+1:0;
//
//	nOpacity2 = imgs2[nIndex2].xOpacity2;
//	
//	// changes speed of fade, higher values increase speed
//	cOpacity2-=.05; 
//	nOpacity2+=.05;
//	
//	imgs2[nIndex2].style.display = "block";
//	imgs2[current2].xOpacity2 = cOpacity2;
//	imgs2[nIndex2].xOpacity2 = nOpacity2;
//	
//	setOpacity2(imgs2[current2]); 
//	setOpacity2(imgs2[nIndex2]);
//	
//	if(cOpacity2<=0) {
//		imgs2[current2].style.display = "none";
//		current2 = nIndex2;
//		// sets delay between each fade in ms
//		setTimeout(so_xfade2,3000);
//	} else {
//		setTimeout(so_xfade2,50);
//	}
//	
//	function setOpacity2(obj2) {
//		if(obj2.xOpacity2>.99) {
//			obj2.xOpacity2 = .99;
//			return;
//		}
//		obj2.style.opacity = obj2.xOpacity2;
//		obj2.style.MozOpacity = obj2.xOpacity2;
//		obj2.style.filter = "alpha(opacity=" + (obj2.xOpacity2*99) + ")";
//	}
//	
//}