var duration = 4;
var delay = duration * 1000;
var srcx = "url(/images/worldarchive-logo1.gif)";

MM_preloadImages('/images/worldarchive-logo1.gif','/images/worldarchive-logo2.gif','/images/worldarchive-logo3.gif','/images/worldarchive-logo4.gif')


function headerAnim (imgN){
	oImg = document.getElementById('tableHeadImage');
	oImg2 = document.getElementById('tableHeadImage2');
	src = "url(/images/worldarchive-logo"+imgN+".gif)";
	if (msie) {
		oImg.style.filter = "progid:DXImageTransform.Microsoft.GradientWipe(Duration="+duration+",WipeStyle=1)";
	    oImg.filters[0].apply();
		oImg.style.backgroundImage = src;
		oImg.filters[0].play();
	} else {
		oImg2.style.backgroundImage = srcx;
		changeOpac(0,'tableHeadImage')
		oImg.style.backgroundImage = src;
		opacity ('tableHeadImage',0,100,delay);
		srcx = src;
	}
	imgN++;
	if (imgN > 4) {imgN = 1;}
	headTimerID = setTimeout("headerAnim("+imgN+");", delay);
}

headTimerID = setTimeout("headerAnim(2);",delay);