/**
 * --------------------------------------------------------------------
 * 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
 * --------------------------------------------------------------------
 */

var blank = new Image();
blank.src = '_pics/null.gif';

//Tutorials:PNG Opacity Fix for IE6
//http://docs.jquery.com/Tutorials:PNG_Opacity_Fix_for_IE6#The_Problem
//Author: Timo Besenreuther 
function fixPng(png,after) {
	// get src
	var src = png.src;
	
	// set width and height only if If the images are not loaded
	
	if (after) {
		if (!png.style.width) { png.style.width = $(png).width(); }
		if (!png.style.height) { png.style.height = $(png).height(); }
	}
	// replace by blank image
	png.onload = function() { };
	png.src = blank.src;
	// set filter (display original image)
	png.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + src + "',sizingMethod='scale')";
}
	
(function($) {

jQuery.fn.pngFix = function(settings) {

	// Settings
	settings = jQuery.extend({
		blankgif: '_pics/null.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);

	$.ifixpng = function(customPixel) {
		$.ifixpng.pixel = customPixel;
	};
	
	$.ifixpng.getPixel = function() {
		return $.ifixpng.pixel || '_pics/null.gif';
	};
	
	/*
	var hack = {
		ltie7  : $.browser.msie && $.browser.version < 7,
		filter : function(src) {
			return "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true,sizingMethod=crop,src='"+src+"')";
		}
	};
	*/
	
	
	
	
	
	if (jQuery.browser.msie && (ie55 || ie6)) {
	    $('img[src$=.png]').each(function() {
		 if (!this.complete) {
		   this.onload = function() { fixPng(this,0) };
		 } else {
		   fixPng(this,1);
		 }
	     });
		    
		/*
		//fix images with png-source
		jQuery(this).find("img[src$=.png]").each(function() {
										
			/*							
			if (jQuery(this).is('img')) { // hack image tags present in dom
				if (jQuery(this).attr('src')) {
					if (jQuery(this).attr('src').match(/.*\.png([?].*)?$/i)) { // make sure it is png image
						// use source tag value if set 
						var source = jQuery(this).attr('src');
						// apply filter
						jQuery(this).css({filter:hack.filter(source), width:jQuery(this).width(), height:jQuery(this).height()})
						  .attr({src:$.ifixpng.getPixel()})
						  .positionFix();
					}
				}
			}
			
			var base = $('base').attr('href');
			if (base) {
				// remove anything after the last '/'
				base = base.replace(/\/[^\/]+$/,'/');
			}
						
			
			
			var base = $('base').attr("href");
		
			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=\'' +base+ jQuery(this).attr('src') + '\',enabled=true,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);
			jQuery(this).positionFix();
		});
		*/

		// 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')";
				jQuery(this).children().positionFix();
		


			}
		});
		
		//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;

};

	$.fn.positionFix = function() {
		return this.each(function() {
			
			var position = $(this).css('position');
			if (position != 'absolute' && position != 'relative') {
				$(this).css({position:'relative'});
			}
		});
	};
})(jQuery);