function showDesc(elemId, descString)
{
  var ref=null;
  if(document.body && document.body.innerHTML && (ref = document.getElementById(elemId)) != null)
  ref.innerHTML = descString;
}
var description = new Array();
description[0] = "&nbsp";
description[1] = "Snares";
description[2] = "Tenors";
description[3] = "Basses";
description[4] = "Cymbals";