Random Image Rotator

[charltondurie]

I have the following code that rotates images on my page.

 

I need it to display the first image randomly and then display the following ones randomly as well (no defined order). How do I achieve this?

 

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

var d=document, imgs = new Array(), zInterval = null, current=0, pause=false;

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

css = d.createElement("link");
css.setAttribute("href","template.css");
css.setAttribute("rel","stylesheet");
css.setAttribute("type","text/css");
d.getElementsByTagName("head")[0].appendChild(css);

imgs = d.getElementById("scroller").getElementsByTagName("img");
for(i=1;i<imgs.length;i++) imgs[i].xOpacity = 0;
imgs[0].style.display = "block";
imgs[0].xOpacity = .99;

setTimeout(so_xfade,5000);
}

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

nOpacity = imgs[nIndex].xOpacity;

cOpacity-=.05; 
nOpacity+=.05;

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;
	setTimeout(so_xfade,5000);
} 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*100) + ")";
}

}