var Subform = Class.create({
  lineIndex: 1,
  parentElement: "",
  initialize: function(rawHTML, lineIndex, parentElement) {
    this.rawHTML        = rawHTML;
    this.lineIndex      = lineIndex;
    this.parentElement  = parentElement;
  },
  parsedHTML: function() {
    return this.rawHTML.replace(/INDEX/g, this.lineIndex++);
  },
  add: function() {
    new Insertion.Bottom($(this.parentElement), this.parsedHTML());
  }
});

function remove_subform(node)
{
  if (!node) return false;
  if (typeof node == 'string')
    node = document.getElementById(node);
  if (node) node.innerHTML = 'Removing ..' + node.innerHTML
}