/*
 * jQuery Watermark plugin
 * Version 1.1.1 (16-JUL-2010) CUSTOM
 * @requires jQuery v1.2.3 or later
 *
 * Examples at: http://mario.ec/static/jq-watermark/
 * Copyright (c) 2010 Mario Estrada
 * Licensed under the MIT license:
 * http://www.opensource.org/licenses/mit-license.php
 *
 */

(function($)
{
    var old_ie = $.browser.msie && $.browser.version < 8;
    var hard_left = 4
 $.watermarker = function(){}; 
 $.extend($.watermarker, {
  defaults: {
   color : '#fff',
   left: 2,
   top: 15,
   fallback: false
  },
  setDefaults: function(settings)
  {
   $.extend( $.watermarker.defaults, settings );
  },
  checkVal: function(val, label)
  {
   if(val == '') 
    $(label).show();
   else 
    $(label).hide();
  },
  html5_support: function() {
            var i = document.createElement('input');
            return 'placeholder' in i;
        }
 });
 
 $.fn.watermark = function(text, options){
  var options, elems;
  options = $.extend($.watermarker.defaults, options);
  elems = this.filter('input[type=text], input[type=password], input[type=email], input[type=url], input[type=search], textarea');
  
  if(options.fallback && $.watermarker.html5_support())
      return;
  
  elems.each(function()
  {
   var $elem, attr_name, label_text, watermark_container, watermark_label;
   var e_margin_left, e_margin_top, pos, e_top = 0, height, line_height;
   
   $elem = $(this);
   if($elem.attr('data-jq-watermark') == 'processed')
       return;
   
   attr_name = $elem.attr('placeholder') != undefined && $elem.attr('placeholder') != '' ? 'placeholder' : 'title';
   label_text = text === undefined || text === '' ? $(this).attr(attr_name) : text;
   watermark_container = $('<span class="watermark_container"></span>');
   watermark_label = $('<span class="watermark">' + label_text + '</span>');
   
   // If used, remove the placeholder attribute to prevent conflicts
    if(attr_name == 'placeholder')
    $elem.removeAttr('placeholder');
   
   watermark_container.css({
    display: 'inline-block',
    position: 'relative'
   });
   
   if(old_ie)
   {
       watermark_container.css({
          zoom: 1,
          display: 'inline' 
       });
   }
   
   $elem.wrap(watermark_container).attr('data-jq-watermark', 'processed');
   if(this.nodeName.toLowerCase() == 'textarea')
   {
       e_height = $elem.css('line-height');
    e_height = e_height === 'normal' ? parseInt($elem.css('font-size')) : e_height;
       e_top = ($elem.css('padding-top') != 'auto' ? parseInt($elem.css('padding-top')):0);
       e_top += ($elem.css('margin-top') != 'auto' ? parseInt($elem.css('margin-top')):0);
      }else{
          e_height = $elem.outerHeight();
      }
   
   e_margin_left = $elem.css('margin-left') != 'auto' ? parseInt($elem.css('margin-left')) : 0;
   e_margin_left += $elem.css('padding-left') != 'auto' ? parseInt($elem.css('padding-left')) : 0;
   
   $.watermarker.checkVal($elem.val(), watermark_label);
   
   watermark_label.css({
    position: 'absolute',
    display: 'block',
             fontFamily: $elem.css('font-family'),
             fontSize: $elem.css('font-size'),
             color: options.color,
             left: hard_left + options.left + e_margin_left,
             top: options.top + e_top,
             height: e_height,
             lineHeight: e_height + 'px',
             textAlign: 'left'
   }).data('jq_watermark_element', $elem);
   
   watermark_label.click(function()
   {
    $($(this).data('jq_watermark_element')).focus();
   });
   
   $elem.before(watermark_label)
   .focus(function()
   {
    $.watermarker.checkVal($(this).val(), watermark_label);
    watermark_label.animate({ opacity : 0.7}, 250);
   })
   .blur(function()
   {
    $.watermarker.checkVal($(this).val(), watermark_label);
    watermark_label.animate({ opacity : 1}, 250);
   })
   .keydown(function(e)
   {
    $(watermark_label).hide();
   });
  });
  
  return this;
 };
 
 $(document).ready(function()
 {
  $('.jq_watermark').watermark();
 });
})(jQuery);