/**
 * --------------------------------------------------------------------
 * jQuery-Plugin "pngFix"
 * Version: 1.1, 11.09.2007
 * 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:
 *    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: 'http://www.caiwu-zixun.com/drupal/modules/pngfix/blank.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)) {
			       for(var j=0; j<document.images.length; j++) 
			       { 
			          var img = document.images[j] 
			          var imgName = img.src.toUpperCase() 
			          if (imgName.substring(imgName.length-3, imgName.length) == "PNG") 
			          { 
			             var imgID = (img.id) ? "id='" + img.id + "' " : "";
			             var imgClass = (img.className) ? "class='" + img.className + "' " : "";
			             var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' ";
			             var imgStyle = "display:inline-block;" + img.style.cssText;
			             if (img.align == "left"){ imgStyle = "float:left;" + imgStyle ;} 
			             if (img.align == "right") {imgStyle = "float:right;" + imgStyle ;} 
			             if (img.parentElement.href) {imgStyle = "cursor:hand;" + imgStyle ;} 
			             
			             var strNewHTML = "<span " + imgID + imgClass + imgTitle 
			             + " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";" 
			             + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader" 
			             + "(src=\'" + img.src + "\');\"></span>";
			             img.outerHTML = strNewHTML;
			             j = j-1;
			          } 
			       } 

		
		//fix images with png-source
//		jQuery(this).find("img[@src$=.png]").each(function() {
//
//			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') + '" ' : '';
//			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 = '';
//			}
//			var imgStyle = (this.style.cssText);
//
//			strNewHTML += '<span '+imgId+imgClass+imgTitle+imgAlt;
//			strNewHTML += 'style="position:relative;white-space:pre-line;display:inline-block;background:transparent;'+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="position:relative;display:inline-block;'+prevStyle+imgHand+'width:' + jQuery(this).width() + 'px;' + 'height:' + jQuery(this).height() + 'px;'+'">' + strNewHTML + '</span>';
//			}
//
//			jQuery(this).hide();
//			jQuery(this).after(strNewHTML);
//			alert(strNewHTML);
//
//		});

		// fix css background pngs
//		jQuery(this).find("*").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='scale')";
//			}
//		});
		
		//fix input with png-source
//		jQuery(this).find("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 jQuery;

};

})(jQuery);