var imgList = new Array("comap/headerBgImages/resized/bark1.jpg","comap/headerBgImages/resized/blueleaf800140.jpg","comap/headerBgImages/resized/boy.jpg","comap/headerBgImages/resized/ceiling.jpg","comap/headerBgImages/resized/cloth.jpg","comap/headerBgImages/resized/forest.jpg","comap/headerBgImages/resized/forestedge.jpg","comap/headerBgImages/resized/frog.jpg","comap/headerBgImages/resized/knit.jpg","comap/headerBgImages/resized/leaves.jpg","comap/headerBgImages/resized/maple.jpg","comap/headerBgImages/resized/milk.jpg","comap/headerBgImages/resized/ORANGE.jpg","comap/headerBgImages/resized/rooftile.jpg","comap/headerBgImages/resized/shells.jpg","comap/headerBgImages/resized/spring.jpg","comap/headerBgImages/resized/turtle.jpg","comap/headerBgImages/resized/wood.jpg");

var headerElement = document.getElementById('mainHeaderTable');
var bgCounter = 0;
function changeHeaderBg(){
	if(headerElement){
		headerElement.style.backgroundImage = 'url('+imgList[bgCounter]+')';
		if(++bgCounter>=imgList.length){
			bgCounter = 0;
		}
		setTimeout('changeHeaderBg();',10000);
	}
}
if(headerElement){
	var imageObjs = new Array; 
	for(var i=0;i<imgList.length;i++){
		imageObjs[i] = new Image;
		imageObjs[i].src = imgList[i];
	}
	changeHeaderBg();
}