//Insert Image file names to rotate.
var sImagesDir = "/enterprise/images/logos/";
var aImages = new Array("amag.gif",
						"att.gif",
						"brokers.gif",
						"butte.gif",
						"celanese.gif",
						"cnlbank.gif",
						"compwest.gif",
						"dekalb.gif",
						"exponential.gif",
						"kempinski.gif",
						"mfg.gif",
						"nokiasiemens.gif",
						"novo.gif",
						"philips.gif",
						"pwc.gif",
						"sanbernadino.gif",
						"shell.gif",
						"usaf.gif",
						"nih.gif",
						"unilever.gif",
						"vapartners.gif",
						"westat.gif");
						
//Start Preload of images
var aPreloadImages = new Array ();

for(var i=0; i<aImages.length; i++)
{
   	aPreloadImages[i]= new Image();
   	aPreloadImages[i].src = sImagesDir + aImages[i];
}
//Init rotation state
var c1Image=0,c2Image=0,c3Image=0,c4Image=0,rand=0;							
function loadImage(cell){
	while (c1Image == rand || c2Image == rand || c3Image == rand || c4Image == rand) {
		rand = Math.floor(Math.random() * aImages.length);
	}
	document.getElementById(cell).innerHTML = "<img src='" + sImagesDir + aImages[rand] + "'>";
	window[cell+"Image"] = rand;
}
function rotateImage(cell){
	while (c1Image == rand || c2Image == rand || c3Image == rand || c4Image == rand) {
		rand = Math.floor(Math.random() * aImages.length);
	}
	Effect.Fade(document.getElementById(cell), {duration: 0.5});
	setTimeout("document.getElementById(\""+cell+"\").innerHTML = \"<img src='" + sImagesDir + aImages[rand] + "'>\"", 500);
	setTimeout("Effect.Appear(document.getElementById(\""+cell+"\"), {duration: 0.5});", 500);
	window[cell+"Image"] = rand;
}
window.onload = function(){
	loadImage("c1");
	loadImage("c2");
	loadImage("c3");
	loadImage("c4");
	setInterval("rotateImage('c1')", 5000);
	setTimeout('setInterval("rotateImage(\'c4\')", 5000)', 750);
	setTimeout('setInterval("rotateImage(\'c2\')", 5000)', 1500);
	setTimeout('setInterval("rotateImage(\'c3\')", 5000)', 2250);
};