(function($){
    $.fn.textLimiter = function(options) {
      return this.each(function() {
	    var $this = $(this);
        options = $.extend({
            'maxLength': 100,
			'align': 'right',
			'valign': 'bottom',
			'show': 'auto',
			'elCount': 'auto'
		}, options);

		$this.attr('maxLength', options['maxLength']);

        $this.keyup(function () { 
          processTextAreaText($this); 
        });
		$this.keydown(function () { 
          processTextAreaText($this); 
        });
		$this.change(function () { 
          processTextAreaText($this); 
        });

        if (options['elCount'] == 'auto') {
		  if (options['show'] == 'always') {
		    showCount($this, options['align'], options['valign'], options['show']);
		  } else if (options['show'] == 'auto') {
		    $this.focusin(function () {
              showCount($this, options['align'], options['valign'], options['show']);
            });
		  }
		} else {
          $this.attr('divName', options['elCount']);
          $('#' + $this.attr('divName')).html($this.attr('maxLength') - $this.text().length);
		}

		$this.focusout(function () {
		  if (options['elCount'] == 'auto' && options['show'] != 'always') {
            $('#' + $this.attr('divName')).hide();
		  }
        });		
	  });
    };

    function processTextAreaText($obj) {
      var maxLength = $obj.attr('maxLength');
      var text = $obj.text();
      var $cc = $('#' + $obj.attr('divName'))

	  $cc.html(maxLength - text.length);
	
      if (parseInt($cc.html()) < 0)  
        $cc.html('0');
	
      if (maxLength != 0 && text.length > maxLength) 
        $obj.text(text.substr(0, maxLength));
    };

	function showCount($obj, align, valign, show) {
	  if (show == 'always') {
		var divName = 'textAreaMaxLengthPlugin_divCharCount_' + $obj.attr('id');
	  } else {
        var divName = 'textAreaMaxLengthPlugin_divCharCount';
	  }
      
	  if (!$('#' + divName).length) {
        $('body').append('<div id="' + divName + '"></div>');
      }

	  $obj.attr('divName', divName);

      var $cc = $('#' + divName);

	  $cc.html($obj.attr('maxLength') - $obj.text().length);

	  var x = $obj.position().left;
		
	  if (valign == 'bottom') {
		var y = $obj.position().top + $obj.height() - $cc.height();
	  } else if (valign == 'top') {
		var y = $obj.position().top + 2;
	  }          

	  $cc.css('position', 'absolute');
	  $cc.css('text-align', align);
	  $cc.css('padding', '0px 15px 0px 5px');
	  $cc.css('width', $obj.width());	
	  $cc.css('opacity', 0.5);
	  $cc.css('left', x);
	  $cc.css('top', y);

	  if (show != 'never') {
		$cc.fadeTo(200, .5);	      
	  }
	}
  
  })(jQuery);