var curImg = 1;
function swapImage(img) {
	var newImg = img;
	var id = document.getElementById("imgBanner");
	var classVal = 'banner img'+img;
	id.className = classVal;
//	alert(id.className)
	oldLink = document.getElementById('gal'+curImg);
	oldLink.className = "";
	newLink = document.getElementById('gal'+img);
	newLink.className = "cur";
	curImg = img;

	if(document.getElementById('imgBannerOverlay')) {
		var el = document.getElementById('imgBannerOverlay');
		if(curImg == 1) {
			el.style.display = 'block';
		} else {
			el.style.display = 'none';
		}
	}
}