function popupart(lUrl, lHeight){
  var cDescrip = "toolbar=no,location=no,directories=no,menubar=no,status=no,scrollbars=no,resizable=yes,width=755,height="+(lHeight+46)+",copyhistory=no";
  cWinName = "artWindow";
  cHandle = window.open(lUrl,cWinName,cDescrip);
  if (window.focus) {
    cHandle.focus();
  }
}

function pad(lNum){
  if (lNum < 10) return "0"+lNum;
  return lNum;
}

function showPiece(lNum){
  document.images["art"].src = "images/art/"+cArtName+pad(lNum)+"."+cSuffix;
}

function next(){
  if (cCurrent >= cCount-1){
    cCurrent = 0;
  }else{
    cCurrent++;
  }
  showPiece(cCurrent);
}

function prev(){
  if (cCurrent < 1){
    cCurrent = cCount-1;
  }else{
    cCurrent--;
  }
  showPiece(cCurrent);
}

function jumpto(lNum){
  cCurrent = lNum;
  showPiece(cCurrent);
}