var bcBanner = [
	'/rsc/img/bc/hp_right_banner_dzn01.jpg',
	'/rsc/img/bc/hp_right_banner_dzn02.jpg',
	'/rsc/img/bc/hp_right_banner_dzn03.jpg',
	'/rsc/img/bc/hp_right_banner_dzn04.jpg',
	'/rsc/img/bc/hp_right_banner_dzn05.jpg'
];
var theBanner = Math.round(Math.random()*(bcBanner.length-1));

function showHeaderImage(){
	document.getElementById("randomBannerImg").src = bcBanner[theBanner];
}