var Popup = Class.create();
Popup.prototype = 
{
  windowID : null,  

  initialize: function(options)
  {
    this.options = {
      url: '#',
      width: 300,
      height: 300
    }
    Object.extend(this.options, options || {});
    this.windowID=window.open(this.options.url, '', 'width='+this.options.width+',height='+this.options.height+',scrollbars=1');
  }
}