/***
* --------------------------------------------------------------------
* jQuery-Plugin "pngFix"
* Version: 1.3, 02.04.2009
* by Andreas Eberhard and Rune Grønkjær, andreas.eberhard@gmail.com, rg@co3.dk
*                      http://jquery.andreaseberhard.de/
*                      http://www.co3.dk
*
* Copyright (c) 2007 Andreas Eberhard
* Licensed under GPL (http://www.opensource.org/licenses/gpl-license.php)
*
* Changelog:
*    02-04-2009 Version 1.3
*    - Multiple improvements to the selection method
*    - Changed the way image tags are png-fixed
*    09.03.2009 Version 1.2
*    - Update for jQuery 1.3.x, removed @ from selectors
*    11.09.2007 Version 1.1
*    - removed noConflict
*    - added png-support for input type=image
*    - 01.08.2007 CSS background-image support extension added by Scott Jehl, scott@filamentgroup.com, http://www.filamentgroup.com
*    31.05.2007 initial Version 1.0
 
* --------------------------------------------------------------------
* @example $(function(){$(document).pngFix();});
* @desc Fixes all PNG's in the document on document.ready
*
* jQuery(function(){jQuery(document).pngFix();});
* @desc Fixes all PNG's in the document on document.ready when using noConflict
*
* @example $(function(){$('div.examples').pngFix();});
* @desc Fixes all PNG's within div with class examples
*
* @example $(function(){$('div.examples').pngFix( { blankgif:'ext.gif' } );});
* @desc Fixes all PNG's within div with class examples, provides blank gif for input with png
* --------------------------------------------------------------------
*/


(function($) {

  jQuery.fn.pngFix = function(settings) {

    // Settings
    settings = jQuery.extend({
      blankgif: 'x.gif'
    }, settings);

    var ie55 = (navigator.appName == "Microsoft Internet Explorer" && parseInt(navigator.appVersion) == 4 && navigator.appVersion.indexOf("MSIE 5.5") != -1);
    var ie6 = (navigator.appName == "Microsoft Internet Explorer" && parseInt(navigator.appVersion) == 4 && navigator.appVersion.indexOf("MSIE 6.0") != -1);

    if (jQuery.browser.msie && (ie55 || ie6)) {

      //fix images with png-source
      this.filter("img").each(function() {

        jQuery(this).width(jQuery(this).width());
        jQuery(this).height(jQuery(this).height());
        this.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + this.src + "',sizingMethod='crop')";

        this.src = settings.blankgif;


      });

      // fix css background pngs
      this.filter("*").not("img, input[src$=.png]").each(function() {
        var bgIMG = jQuery(this).css('background-image');
        if (bgIMG.indexOf(".png") != -1) {
          var iebg = bgIMG.split('url("')[1].split('")')[0];
          jQuery(this).css('background-image', 'none');
          jQuery(this).get(0).runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + iebg + "',sizingMethod='crop')";
        }
      });

      //fix input with png-source
      this.filter("input[src$=.png]").each(function() {
        var bgIMG = jQuery(this).attr('src');
        jQuery(this).get(0).runtimeStyle.filter = 'progid:DXImageTransform.Microsoft.AlphaImageLoader' + '(src=\'' + bgIMG + '\', sizingMethod=\'scale\');';
        jQuery(this).attr('src', settings.blankgif)
      });

    }

    return this;

  };

})(jQuery);