function Ruby ()
{
}
if (!Array.prototype.push) { 
  Array.prototype.push = function() { 
      var startLength = this.length; 
      for (var i = 0; i < arguments.length; i++) 
      this[startLength + i] = arguments[i]; 
     return this.length; 
  } 
}
$ = function ()
{
  var elements = new Array(); 
  for (var i = 0; i < arguments.length; i++) { 
    var element = arguments[i]; 
    if (typeof element == 'string') 
      element = document.getElementById(element); 
    if (arguments.length == 1) 
      return element; 
    elements.push(element); 
  } 
  return elements;
}
$F = function ()
{
 if(arguments.length == 1)
  return document.getElementById(arguments[0]).value;
 else
 {
  var elements = new Array();
  for(var i = 0;i< arguments.length; i++)
  {
   elements.push(document.getElementById(arguments[i]).value);
  }
  return elements;
 }
}