var imageNames = new Array("","main01.jpg","main02.jpg","main03.jpg","main04.jpg","main05.jpg","main06.jpg","main07.jpg","main08.jpg","main09.jpg","main10.jpg","main11.jpg","main12.jpg","main13.jpg");
	var loadImages = new Array(imageNames.length);
	for(i = 1; i < imageNames.length; i++) {
		loadImages[i] = new Image();
		loadImages[i].src = "img/" + imageNames[i];
	}
	function ChangeImage(num) {
		if (document.images) {
			document.images['clinic_img'].src = loadImages[num].src;
			document.images['clinic_img'].height = loadImages[num].height;
		}
	}