/**
* jQuery (PNG Fix) v1.2
* Microsoft Internet Explorer 24bit PNG Fix
*
* The MIT License
* 
* Copyright (c) 2007 Paul Campbell (pauljamescampbell.co.uk)
* 
*/
(function($) {

$.fn.pngfix = function(options) {

// Review the Microsoft IE developer library for AlphaImageLoader reference 
// http://msdn2.microsoft.com/en-us/library/ms532969(VS.85).aspx

// ECMA scope fix
var elements 	= this;
var settings 	= $.extend({
imageFixSrc: 	false,
sizingMethod: 	false 
}, options);

if(!$.browser.msie || ($.browser.msie &&  $.browser.version >= 7)) {
return(elements);
}

function setFilter(el, path, mode) {
var fs = el.attr("filters");
var alpha = "DXImageTransform.Microsoft.AlphaImageLoader";
if (fs[alpha]) {
fs[alpha].enabled = true;
fs[alpha].src = path; 
fs[alpha].sizingMethod = mode;
} else {
el.css("filter", 'progid:' + alpha + '(enabled="true", sizingMethod="' + mode + '", src="' + path + '")');			
}
}

function setDOMElementWidth(el) {
if(el.css("width") == "auto" & el.css("height") == "auto") {
el.css("width", el.attr("offsetWidth") + "px");
}
}

return(
elements.each(function() {

// Scope
var el = $(this);

if(el.attr("tagName").toUpperCase() == "IMG" && (/\.png/i).test(el.attr("src"))) {
if(!settings.imageFixSrc) {

// Wrap the <img> in a <span> then apply style/filters, 
// removing the <img> tag from the final render 
el.wrap("<span></span>");
var par = el.parent();
par.css({
height: 	el.height(),
width: 		el.width(),
display: 	"inline-block"
});
setFilter(par, el.attr("src"), "scale");
el.remove();
} else if((/\.gif/i).test(settings.imageFixSrc)) {

// Replace the current image with a transparent GIF
// and apply the filter to the background of the 
// <img> tag (not the preferred route)
setDOMElementWidth(el);
setFilter(el, el.attr("src"), "image");
el.attr("src", settings.imageFixSrc);
}

} else {
var bg = new String(el.css("backgroundImage"));
var matches = bg.match(/^url\("(.*)"\)$/);
if(matches && matches.length) {

// Elements with a PNG as a backgroundImage have the
// filter applied with a sizing method relevant to the 
// background repeat type
setDOMElementWidth(el);
el.css("backgroundImage", "none");

// Restrict scaling methods to valid MSDN defintions (or one custom)
var sc = "crop";
if(settings.sizingMethod) {
sc = settings.sizingMethod;
} 
setFilter(el, matches[1], sc);

// Fix IE peek-a-boo bug for internal links
// within that DOM element
el.find("a").each(function() {
$(this).css("position", "relative");
});
}
}

})
);
}

})(jQuery)