function showHeader(){
	var now = new Date;
	var timeNow = now.getHours();
	var img = null;
	
	if (timeNow < 6 || timeNow > 21) {
	img = 'night.jpg';
	} 
		else if (timeNow < 11) {
		img = 'morning.jpg';
		}
		else if (timeNow < 18) {
		img = 'noon.jpg';
		}
	else {
	img = 'sunset.jpg';
	}
  document.write('<img src="img/imgSwap\/'+img+'" width="800px" height="279px" alt="Welcome to Chris Hinds">');
}