window.onload = function RandomHeaderImages() {
	var header = document.getElementById('header');
	var pictures = new Array();
	pictures[0] = '/Portals/0/Skins/MPS/headers_home/orchidee.jpg';
	pictures[1] = '/Portals/0/Skins/MPS/headers_home/vleeseter.jpg';
	pictures[2] = '/Portals/0/Skins/MPS/headers_home/lieveheerstbeest1.jpg';
	pictures[3] = '/Portals/0/Skins/MPS/headers_home/lieveheerstbeest2.jpg';
	pictures[4] = '/Portals/0/Skins/MPS/headers_home/header_tomaat.jpg';
	pictures[5] = '/Portals/0/Skins/MPS/headers_home/veiling_motion.jpg';
	pictures[6] = '/Portals/0/Skins/MPS/headers_home/zonnebloem1.jpg';
	pictures[7] = '/Portals/0/Skins/MPS/headers_home/gerbera.jpg';
	
	
	var numPics = pictures.length;
	
	if (document.images) {
		var chosenPic = Math.floor((Math.random() * numPics));
		header.style.background = 'url(' + pictures[chosenPic] + ')';
		header.style.backgroundRepeat = 'no-repeat';
	}
}

RandomHeaderImages();