function changeHeader(number) {
	
	headerDiv = document.getElementById('headerImage');
	headerDiv.style.backgroundImage = 'url(images/bgHeader'+number+'.png)';
	
}

function initHeaderChange() {
	
	setTimeout("changeHeader(2)",5000);
	setTimeout("changeHeader(3)",10000);
	setTimeout("changeHeader(4)",15000);
	setTimeout("changeHeader(5)",20000);
	setTimeout("changeHeader(1)",25000);
	
	setTimeout("initHeaderChange",30000);
	
}