function randomHeader() {
	var Display = document.getElementById('header');
	var randomnumber=Math.floor(Math.random()*4)

	switch (randomnumber)
	{
		case 0:
			Display.style.background = "url(http://pulseorlando.com/images/header.jpg)";
			break;
		case 1:
			Display.style.background = "url(http://pulseorlando.com/images/header1.jpg)";
			break;
		case 2:
			Display.style.background = "url(http://pulseorlando.com/images/header2.jpg)";
			break;
		case 3:
			Display.style.background = "url(http://pulseorlando.com/images/header3.jpg)";
			break;
	}
}