/**
 * --------------------------------------------------------------------
 * jQuery-Plugin "pngFix"
 * Version: 1.2, 09.03.2009
 * by Andreas Eberhard, andreas.eberhard@gmail.com
 *                      http://jquery.andreaseberhard.de/
 *
 * Copyright (c) 2007 Andreas Eberhard
 * Licensed under GPL (http://www.opensource.org/licenses/gpl-license.php)
 *
 * Changelog:
 *    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: 'blank.gif',
		maxVersion: 6
	}, settings);

	if (jQuery.browser.msie && jQuery.browser.version <= settings.maxVersion) {
    
    jQuery(this).each(function(){

      var src = jQuery(this).attr("src");
      
		  //fix images/inputs with png-source
		  if(src && src.indexOf(".png") > -1) {

        //is it an input
        if(jQuery(this).get(0).tagName.toLowerCase() == "input"){

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

        //is it an image
        } else if(jQuery(this).get(0).tagName.toLowerCase() == "img") {
          
			    jQuery(this).attr('width',jQuery(this).width());
			    jQuery(this).attr('height',jQuery(this).height());

			    var prevStyle = '';
			    var strNewHTML = '';
			    var imgId = (jQuery(this).attr('id')) ? 'id="' + jQuery(this).attr('id') + '" ' : '';
			    var imgClass = (jQuery(this).attr('class')) ? 'class="' + jQuery(this).attr('class') + ' replacedImg" ' : 'class="replacedImg"';
			    var imgTitle = (jQuery(this).attr('title')) ? 'title="' + jQuery(this).attr('title') + '" ' : '';
			    var imgAlt = (jQuery(this).attr('alt')) ? 'alt="' + jQuery(this).attr('alt') + '" ' : '';
			    var imgAlign = (jQuery(this).attr('align')) ? 'float:' + jQuery(this).attr('align') + ';' : '';
			    var imgHand = (jQuery(this).parent().attr('href')) ? 'cursor:hand;' : '';
			    if (this.style.border) {
				    prevStyle += 'border:'+this.style.border+';';
				    this.style.border = '';
			    }
			    if (this.style.padding) {
				    prevStyle += 'padding:'+this.style.padding+';';
				    this.style.padding = '';
			    }
			    if (this.style.margin) {
				    prevStyle += 'margin:'+this.style.margin+';';
				    this.style.margin = '';
			    }
			    if (this.style.position) {
				    prevStyle += 'position:'+this.style.position+';';
			    }
			    
			    var imgStyle = (this.style.cssText);

			    strNewHTML += '<span '+imgId+imgClass+imgTitle+imgAlt;
			    strNewHTML += 'style="font-size:0; line-height:0; zoom: 1; '+imgAlign+imgHand;
			    strNewHTML += 'width:' + jQuery(this).width() + 'px;' + 'height:' + jQuery(this).height() + 'px;';
			    strNewHTML += ' filter:progid:DXImageTransform.Microsoft.AlphaImageLoader' + '(src=\'' + jQuery(this).attr('src') + '\', sizingMethod=\'scale\'); ';
			    strNewHTML += imgStyle+'"></span>';
			    if (prevStyle != ''){
				    strNewHTML = '<span style="'+prevStyle+imgHand+'width:' + jQuery(this).width() + 'px;' + 'height:' + jQuery(this).height() + 'px;'+'">' + strNewHTML + '</span>';
			    }
			    
			    jQuery(this).after(strNewHTML);
			    $(this).remove();
			    
        }
        
		  }

		  // fix css background pngs
		  var bgImg = jQuery(this).css('background-image');
		  if(bgImg && bgImg.indexOf(".png") > -1) {
			  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='noscale')";
			  }
		  } 
		  
	  });
	}
	
	return jQuery;

};

})(jQuery);