function MX_rollShow(roll) {
  for (i=1; i<40; i+=1) {
		if (document.getElementById("show"+i)!=null) document.getElementById("show"+i).style.display = "none";
	}
	document.getElementById(roll).style.display = "block";
	document.getElementById('footer').style.position = "relative";
	document.getElementById('footer').style.position = "absolute";
}