text: /*
   * Lets you say "either at least X inputs that match selector Y must be filled,
   * OR they must all be skipped (left blank)."
   *
   * The end result, is that none of these inputs:
   *
   *	<input class="productinfo" name="partnumber">
   *	<input class="productinfo" name="description">
   *	<input class="productinfo" name="color">
   *
   *	...will validate unless either at least two of them are filled,
   *	OR none of them are.
   *
   * partnumber:	{skip_or_fill_minimum: [2,".productinfo"]},
   * description: {skip_or_fill_minimum: [2,".productinfo"]},
   * color:		{skip_or_fill_minimum: [2,".productinfo"]}
   *
   * options[0]: number of fields that must be filled in the group
   * options[1]: CSS selector that defines the group of conditionally required fields
   *
   */
  $.validator.addMethod("skip_or_fill_minimum", function (value, element, options) {
  	var $fields = $(options[1], element.form),
  		$fieldsFirst = $fields.eq(0),
  		validator = $fieldsFirst.data("valid_skip") ? $fieldsFirst.data("valid_skip") : $.extend({}, this),
  		numberFilled = $fields.filter(function () {
  			return validator.elementValue(this);
  		}).length,
  		isValid = numberFilled === 0 || numberFilled >= options[0];
  
  	// Store the cloned validator for future validation
  	$fieldsFirst.data("valid_skip", validator);
  
  	// If element isn't being validated, run each skip_or_fill_minimum field's validation rules
  	if (!$(element).data("being_validated")) {
  		$fields.data("being_validated", true);
  		$fields.each(function () {
  			validator.element(this);
  		});
  		$fields.data("being_validated", false);
  	}
  	return isValid;
  }, $.validator.format("Please either skip these fields or fill at least {0} of them."));
  