/*
 * IE PNG Fix v1.4
 *
 * Copyright (c) 2006 Takashi Aida http://www.isella.com/aod2/
 *
 */

// IE5.5+ PNG Alpha Fix v1.0RC4
// (c) 2004-2005 Angus Turnbull http://www.twinhelix.com

// This is licensed under the CC-GNU LGPL, version 2.1 or later.
// For details, see: http://creativecommons.org/licenses/LGPL/2.1/

//var blankGif = window.location.pathname.match(/^\/[^\/]+/) + "";

var blankGif;
(function(){
	var d,t,i,l,s,p;
	d=document;
	t=d.getElementsByTagName('script');
	for(i=0,l=t.length;i<l;i++)
	{
		s=t[i].getAttribute('src');
		if(s.match(/iepngfix\.js$/))
		{
			p=s.replace('iepngfix.js','');
			break;
		}
	}
	blankGif = p+"blank.gif";
})();

if (typeof IEPNGFIX == 'undefined') {
//--============================================================================
//  blank:  'http://www.isella.com/aod2/images/blank.gif',
var IEPNGFIX = {
    blank: blankGif,
    filter: 'DXImageTransform.Microsoft.AlphaImageLoader',

    fixit: function (elem, src, method) {
        if (elem.filters[this.filter]) {
            var filter = elem.filters[this.filter];
            filter.enabled = true;
            filter.src = src;
            filter.sizingMethod = method;
        }
        else {
            elem.style.filter = 'progid:' + this.filter +
                '(src="' + src + '",sizingMethod="' + method + '")';
        }
    },

    fixwidth: function(elem) {
        if (elem.currentStyle.width == 'auto' &&
            elem.currentStyle.height == 'auto') {
            elem.style.width = elem.offsetWidth + 'px';
        }
    },

    fixchild: function(elem, recursive) {
        if (!/MSIE (5\.5|6\.|7\.)/.test(navigator.userAgent)) return;

        for (var i = 0, n = elem.childNodes.length; i < n; i++) {
            var childNode = elem.childNodes[i];
            if (childNode.style) {
                if (childNode.style.position) {
                    childNode.style.position = childNode.style.position;
                }
                else {
                    childNode.style.position = 'relative';
                }
            }
            if (recursive && childNode.hasChildNodes()) {
                this.fixchild(childNode, recursive);
            }
        }
    },

    fix: function(elem) {
        if (!/MSIE (5\.5|6\.|7\.)/.test(navigator.userAgent)) return;

        var bgImg =
            elem.currentStyle.backgroundImage || elem.style.backgroundImage;

        if (elem.tagName == 'IMG') {
            if ((/\.png$/i).test(elem.src)) {
                this.fixwidth(elem);
                this.fixit(elem, elem.src, 'scale');
                elem.src = this.blank;
                elem.runtimeStyle.behavior = 'none';
            }
        }
        else if (bgImg && bgImg != 'none') {
            if (bgImg.match(/^url[("']+(.*\.png)[)"']+$/i)) {
                var s = RegExp.$1;
                this.fixwidth(elem);
                elem.style.backgroundImage = 'none';
                this.fixit(elem, s, 'scale'); // crop | image | scale

                if (elem.tagName == 'A' && elem.style) {
                    if (!elem.style.cursor) {
                        elem.style.cursor = 'pointer';
                    }
                }

                this.fixchild(elem);
                elem.runtimeStyle.behavior = 'none';
            }
        }
    },

    hover: function(elem, hvImg) {
        var bgImg = elem.style.backgroundImage;

        if (!bgImg && elem.currentStyle) bgImg = elem.currentStyle.backgroundImage;

        if (elem.tagName == 'IMG' && hvImg) {
            var image = elem.src;
            elem.onmouseover = function() {
                elem.src = hvImg;
                IEPNGFIX.fix(elem);
            };
            elem.onmouseout = function() {
                elem.src = image;
                IEPNGFIX.fix(elem);
            };
        }
        else if (bgImg && bgImg != 'none' && hvImg) {
            elem.onmouseover = function() {
                elem.style.backgroundImage = 'url(' + hvImg + ')';
                IEPNGFIX.fix(elem);
            };
            elem.onmouseout = function() {
                elem.style.backgroundImage = bgImg;
                IEPNGFIX.fix(elem);
            };
        }

        IEPNGFIX.fix(elem);
    }
};

//--============================================================================
} // end if (typeof IEPNGFIX == 'undefined')