standard_image = new Array();
		over_image = new Array();
		
		function rein (button, index)
		{
		  //window.document.images[index].src = over[index].src;
		  document.getElementsByName(button)[0].src = over_image[index].src;
		}
		
		function raus (button, index)
		{
		  //window.document.images[index].src = standard[index].src;
		  document.getElementsByName(button)[0].src = standard_image[index].src;
		}