/*

       * jQuery ifixpng plugin
       * (previously known as pngfix)

       * Version 2.0 (04/11/2007)

       * @requires jQuery v1.1.3 or above

       *

       * Examples at: http://jquery.khurshid.com

       * Copyright (c) 2007 Kush M.

       * Dual licensed under the MIT and GPL licenses:

       * http://www.opensource.org/licenses/mit-license.php

       * http://www.gnu.org/licenses/gpl.html

       */

      /**

        *

        * @example

        *

        * optional if location of pixel.gif if different to default which is images/pixel.gif

        * $.ifixpng('media/pixel.gif');

        *

        * $('img[@src$=.png], #panel').ifixpng();

        *

        * @apply hack to all png images and #panel which icluded png img in its css

        *

        * @name ifixpng

        * @type jQuery

        * @cat Plugins/Image

        * @return jQuery

        * @author jQuery Community

        */

       

      (function($) {

       
      /**

      * helper variables and function

      */

      $.ifixpng = function(customPixel) {
 
      $.ifixpng.pixel = customPixel;

      };

      $.ifixpng.getPixel = function() {

      return $.ifixpng.pixel || 'images/pixel.gif';

      };

      var hack = {

      ltie7 : $.browser.msie && $.browser.version < 7,

      filter : function(src) {

      return "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true,sizingMethod=crop,src='"+src+"')";

      }

      };
       

      /**

      * Applies ie png hack to selected dom elements

      *

      * $('img[@src$=.png]').ifixpng();

      * @desc apply hack to all images with png extensions

      *

      * $('#panel, img[@src$=.png]').ifixpng();

      * @desc apply hack to element #panel and all images with png extensions

      *
      * @name ifixpng

      */

      $.fn.ifixpng = hack.ltie7 ? function() {

      return this.each(function() {

      var $$ = $(this);
 
      var base = $('base').attr('href'); // need to use this in case you are using rewriting urls
 
      if ($$.is('img') || $$.is('input')) { // hack image tags present in dom

      if ($$.attr('src')) {
 
      if ($$.attr('src').match(/.*\.png([?].*)?$/i)) { // make sure it is png image

      // use source tag value if set

      var source = (base && $$.attr('src').substring(0,1)!='/') ? base + $$.attr('src') : $$.attr('src');
 
      // apply filter

      $$.css({filter:hack.filter(source), width:$$.width(), height:$$.height()})
 
      .attr({src:$.ifixpng.getPixel()})

      .positionFix();

      }

      }

      } else { // hack png css properties present inside css
 
      var image = $$.css('backgroundImage');
 
      if (image.match(/^url\(["']?(.*\.png([?].*)?)["']?\)$/i)) {

      image = RegExp.$1;

      $$.css({backgroundImage:'none', filter:hack.filter(image)})

      .children().children().positionFix();

      }

      }

      });

      } : function() { return this; };

       

      /**
  
      * Removes any png hack that may have been applied previously

      *
  93
      * $('img[@src$=.png]').iunfixpng();
  94.
      * @desc revert hack on all images with png extensions
  95.
      *
  96.
      * $('#panel, img[@src$=.png]').iunfixpng();
  97.
      * @desc revert hack on element #panel and all images with png extensions
  98.
      *
  99.
      * @name iunfixpng
 100.
      */

       

      $.fn.iunfixpng = hack.ltie7 ? function() {

      return this.each(function() {

      var $$ = $(this);

      var src = $$.css('filter');

      if (src.match(/src=["']?(.*\.png([?].*)?)["']?/i)) { // get img source from filter

      src = RegExp.$1;

      if ($$.is('img') || $$.is('input')) {

      $$.attr({src:src}).css({filter:''});

      } else {

      $$.css({filter:'', background:'url('+src+')'});

      }

      }

      });

      } : function() { return this; };

      $.fn.positionFix = function() {

      return this.each(function() {

      var $$ = $(this);

      var position = $$.css('position');

      if (position != 'absolute' && position != 'relative') {
 
      $$.css({position:'relative'});

      }

      });

      };

       
      })(jQuery);