function swapPic(container)
 {
 	var big_pic = document.getElementById('picture_bg');
 	var container_box = document.getElementById(container);
 	
 	var big_pic_org = big_pic.src;
 	var container_box_org = container_box.src;
 	
 	big_pic.src = container_box_org;
 	container_box.src = big_pic_org;
 	
 	return false;
 }