/**
* DD_belatedPNG: Adds IE6 support: PNG images for CSS background-image and HTML <IMG/>.
* Author: Drew Diller
* Email: drew.diller@gmail.com
* URL: http://www.dillerdesign.com/experiment/DD_belatedPNG/
* Version: 0.0.8a
* Licensed under the MIT License: http://dillerdesign.com/experiment/DD_belatedPNG/#license
*
* Example usage:
* DD_belatedPNG.fix('.png_bg'); // argument is a CSS selector
* DD_belatedPNG.fixPng( someNode ); // argument is an HTMLDomElement
**/

/*
PLEASE READ:
Absolutely everything in this script is SILLY.  I know this.  IE's rendering of certain pixels doesn't make sense, so neither does this code!
*/

/**
* jquery.belatedPNG: Adds IE6/7/8 support: PNG images for CSS background-image and HTML <IMG/>.
* Author: Kazunori Ninomiya
* Email: Kazunori.Ninomiya@gmail.com
* Version: 0.0.1
* Licensed under the MIT License: http://dillerdesign.com/experiment/DD_belatedPNG/#license
*
* Example usage:
* $('.png_bg').fixPng();
**/

/**
* png.js : PNG rollover images for <img>
* Author: youji maekawa
* Email: youji0926@gmail.com
* Version: 0.0.1
* Licensed under the MIT License: http://dillerdesign.com/experiment/DD_belatedPNG/#license
*
* Example usage:
* $("#selector").fixPng();
* $("#selector").fixPngRollOver();
**/
var DD_belatedPNG;
if (typeof document.documentElement.style.maxHeight != "undefined") {
	// IE 7.0 以上 または Gecko などモダンブラウザー
}
else {
	// IE 6.0 以下
	(function($) {
		DD_belatedPNG = {
			ns: "DD_belatedPNG",
			imgSize: {},
			delay: 10,
			nodesFixed: 0,
			createVmlNameSpace: function () {
				if (document.namespaces && !document.namespaces[this.ns]) {
					document.namespaces.add(this.ns, "urn:schemas-microsoft-com:vml")
				}
			},
			createVmlStyleSheet: function () {
				var b, a;
				b = document.createElement("style");
				b.setAttribute("media", "screen");
				document.documentElement.firstChild.insertBefore(b, document.documentElement.firstChild.firstChild);
				if (b.styleSheet) {
					b = b.styleSheet;
					b.addRule(this.ns + "\\:*", "{behavior:url(#default#VML)}");
					b.addRule(this.ns + "\\:shape", "position:absolute;");
					b.addRule("img." + this.ns + "_sizeFinder", "behavior:none; border:none; position:absolute; z-index:-1; top:-10000px; visibility:hidden;");
					this.screenStyleSheet = b;
					a = document.createElement("style");
					a.setAttribute("media", "print");
					document.documentElement.firstChild.insertBefore(a, document.documentElement.firstChild.firstChild);
					a = a.styleSheet;
					a.addRule(this.ns + "\\:*", "{display: none !important;}");
					a.addRule("img." + this.ns + "_sizeFinder", "{display: none !important;}")
				}
			},
			readPropertyChange: function () {
				var b, c, a;
				b = event.srcElement;
				if (!b.vmlInitiated) {
					return
				}
				if (event.propertyName.search("background") != -1 || event.propertyName.search("border") != -1) {
					DD_belatedPNG.applyVML(b)
				}
				if (event.propertyName == "style.display") {
					c = (b.currentStyle.display == "none") ? "none" : "block";
					for (a in b.vml) {
						if (b.vml.hasOwnProperty(a)) {
							b.vml[a].shape.style.display = c
						}
					}
				}
				if (event.propertyName.search("filter") != -1) {
					DD_belatedPNG.vmlOpacity(b)
				}
			},
			vmlOpacity: function (b) {
				if (b.currentStyle.filter.search("lpha") != -1) {
					var a = b.currentStyle.filter;
					a = parseInt(a.substring(a.lastIndexOf("=") + 1, a.lastIndexOf(")")), 10) / 100;
					b.vml.color.shape.style.filter = b.currentStyle.filter;
					b.vml.image.fill.opacity = a
				}
			},
			handlePseudoHover: function (a) {
				setTimeout(function () {
					DD_belatedPNG.applyVML(a)
				}, 1)
			},
			fix: function (a) {
				if (this.screenStyleSheet) {
					var c, b;
					c = a.split(",");
					for (b = 0; b < c.length; b++) {
						this.screenStyleSheet.addRule(c[b], "behavior:expression(DD_belatedPNG.fixPng(this))")
					}
				}
			},
			applyVML: function (a) {
				a.runtimeStyle.cssText = "";
				this.vmlFill(a);
				this.vmlOffsets(a);
				this.vmlOpacity(a);
				if (a.isImg) {
					this.copyImageBorders(a)
				}
			},
			attachHandlers: function (i) {
				var d, c, g, e, b, f;
				d = this;
				c = {
					resize: "vmlOffsets",
					move: "vmlOffsets"
				};
				if (i.nodeName == "A") {
					e = {
						mouseleave: "handlePseudoHover",
						mouseenter: "handlePseudoHover",
						focus: "handlePseudoHover",
						blur: "handlePseudoHover"
					};
					for (b in e) {
						if (e.hasOwnProperty(b)) {
							c[b] = e[b]
						}
					}
				}
				for (f in c) {
					if (c.hasOwnProperty(f)) {
						g = function () {
							d[c[f]](i)
						};
						i.attachEvent("on" + f, g)
					}
				}
				i.attachEvent("onpropertychange", this.readPropertyChange)
			},
			giveLayout: function (a) {
				a.style.zoom = 1;
				if (a.currentStyle.position == "static") {
					a.style.position = "relative"
				}
			},
			copyImageBorders: function (b) {
				var c, a;
				c = {
					borderStyle: true,
					borderWidth: true,
					borderColor: true
				};
				for (a in c) {
					if (c.hasOwnProperty(a)) {
						b.vml.color.shape.style[a] = b.currentStyle[a]
					}
				}
			},
			vmlFill: function (e) {
				if (!e.currentStyle) {
					return
				} else {
					var d, f, g, b, a, c;
					d = e.currentStyle
				}
				for (b in e.vml) {
					if (e.vml.hasOwnProperty(b)) {
						e.vml[b].shape.style.zIndex = d.zIndex
					}
				}
				e.runtimeStyle.backgroundColor = "";
				e.runtimeStyle.backgroundImage = "";
				f = true;
				if (d.backgroundImage != "none" || e.isImg) {
					if (!e.isImg) {
						e.vmlBg = d.backgroundImage;
						e.vmlBg = e.vmlBg.substr(5, e.vmlBg.lastIndexOf('")') - 5)
					} else {
						e.vmlBg = e.src
					}
					g = this;
					if (!g.imgSize[e.vmlBg]) {
						a = document.createElement("img");
						g.imgSize[e.vmlBg] = a;
						a.className = g.ns + "_sizeFinder";
						a.runtimeStyle.cssText = "behavior:none; position:absolute; left:-10000px; top:-10000px; border:none; margin:0; padding:0;";
						c = function () {
							this.width = this.offsetWidth;
							this.height = this.offsetHeight;
							g.vmlOffsets(e)
						};
						a.attachEvent("onload", c);
						a.src = e.vmlBg;
						a.removeAttribute("width");
						a.removeAttribute("height");
						document.body.insertBefore(a, document.body.firstChild)
					}
					e.vml.image.fill.src = e.vmlBg;
					f = false
				}
				e.vml.image.fill.on = !f;
				e.vml.image.fill.color = "none";
				e.vml.color.shape.style.backgroundColor = d.backgroundColor;
				e.runtimeStyle.backgroundImage = "none";
				e.runtimeStyle.backgroundColor = "transparent"
			},
			vmlOffsets: function (d) {
				var h, n, a, e, g, m, f, l, j, i, k;
				h = d.currentStyle;
				n = {
					W: d.clientWidth + 1,
					H: d.clientHeight + 1,
					w: this.imgSize[d.vmlBg].width,
					h: this.imgSize[d.vmlBg].height,
					L: d.offsetLeft,
					T: d.offsetTop,
					bLW: d.clientLeft,
					bTW: d.clientTop
				};
				a = (n.L + n.bLW == 1) ? 1 : 0;
				e = function (b, p, q, c, s, u) {
					b.coordsize = c + "," + s;
					b.coordorigin = u + "," + u;
					b.path = "m0,0l" + c + ",0l" + c + "," + s + "l0," + s + " xe";
					b.style.width = c + "px";
					b.style.height = s + "px";
					b.style.left = p + "px";
					b.style.top = q + "px"
				};
				e(d.vml.color.shape, (n.L + (d.isImg ? 0 : n.bLW)), (n.T + (d.isImg ? 0 : n.bTW)), (n.W - 1), (n.H - 1), 0);
				e(d.vml.image.shape, (n.L + n.bLW), (n.T + n.bTW), (n.W), (n.H), 1);
				g = {
					X: 0,
					Y: 0
				};
				if (d.isImg) {
					g.X = parseInt(h.paddingLeft, 10) + 1;
					g.Y = parseInt(h.paddingTop, 10) + 1
				} else {
					for (j in g) {
						if (g.hasOwnProperty(j)) {
							this.figurePercentage(g, n, j, h["backgroundPosition" + j])
						}
					}
				}
				d.vml.image.fill.position = (g.X / n.W) + "," + (g.Y / n.H);
				m = h.backgroundRepeat;
				f = {
					T: 1,
					R: n.W + a,
					B: n.H,
					L: 1 + a
				};
				l = {
					X: {
						b1: "L",
						b2: "R",
						d: "W"
					},
					Y: {
						b1: "T",
						b2: "B",
						d: "H"
					}
				};
				if (m != "repeat" || d.isImg) {
					i = {
						T: (g.Y),
						R: (g.X + n.w),
						B: (g.Y + n.h),
						L: (g.X)
					};
					if (m.search("repeat-") != -1) {
						k = m.split("repeat-")[1].toUpperCase();
						i[l[k].b1] = 1;
						i[l[k].b2] = n[l[k].d]
					}
					if (i.B > n.H) {
						i.B = n.H
					}
					d.vml.image.shape.style.clip = "rect(" + i.T + "px " + (i.R + a) + "px " + i.B + "px " + (i.L + a) + "px)"
				} else {
					d.vml.image.shape.style.clip = "rect(" + f.T + "px " + f.R + "px " + f.B + "px " + f.L + "px)"
				}
			},
			figurePercentage: function (d, c, f, a) {
				var b, e;
				e = true;
				b = (f == "X");
				switch (a) {
				case "left":
				case "top":
					d[f] = 0;
					break;
				case "center":
					d[f] = 0.5;
					break;
				case "right":
				case "bottom":
					d[f] = 1;
					break;
				default:
					if (a.search("%") != -1) {
						d[f] = parseInt(a, 10) / 100
					} else {
						e = false
					}
				}
				d[f] = Math.ceil(e ? ((c[b ? "W" : "H"] * d[f]) - (c[b ? "w" : "h"] * d[f])) : parseInt(a, 10));
				if (d[f] % 2 === 0) {
					d[f]++
				}
				return d[f]
			},
			fixPng: function (c) {
				c.style.behavior = "none";
				var g, b, f, a, d;
				if (c.nodeName == "BODY" || c.nodeName == "TD" || c.nodeName == "TR") {
					return
				}
				c.isImg = false;
				if (c.nodeName == "IMG") {
					if (c.src.toLowerCase().search(/\.png$/) != -1) {
						c.isImg = true;
						c.style.visibility = "hidden"
					} else {
						return
					}
				} else {
					if (c.currentStyle.backgroundImage.toLowerCase().search(".png") == -1) {
						return
					}
				}
				g = DD_belatedPNG;
				c.vml = {
					color: {},
					image: {}
				};
				b = {
					shape: {},
					fill: {}
				};
				for (a in c.vml) {
					if (c.vml.hasOwnProperty(a)) {
						for (d in b) {
							if (b.hasOwnProperty(d)) {
								f = g.ns + ":" + d;
								c.vml[a][d] = document.createElement(f)
							}
						}
						c.vml[a].shape.stroked = false;
						c.vml[a].shape.appendChild(c.vml[a].fill);
						c.parentNode.insertBefore(c.vml[a].shape, c)
					}
				}
				c.vml.image.shape.fillcolor = "none";
				c.vml.image.fill.type = "tile";
				c.vml.color.fill.on = false;
				g.attachHandlers(c);
				g.giveLayout(c);
				g.giveLayout(c.offsetParent);
				c.vmlInitiated = true;
				g.applyVML(c)
			},
			fixPngRollOver: function (el) {
				if (el.vml && el.vml.image.fill.getAttribute("src").match(/\.png/)) {
					var image = el.vml.image.fill;
					el.vml.image.shape.attachEvent('onmouseover', function () {
						image.setAttribute("src", image.getAttribute("src").replace(".png", "_on.png"));
					});
					el.vml.image.shape.attachEvent('onmouseout', function () {
						image.setAttribute("src", image.getAttribute("src").replace("_on.png", ".png"));
					});
				}
			}
		};
		try {
			document.execCommand("BackgroundImageCache", false, true)
		} catch (r) {}
		DD_belatedPNG.createVmlNameSpace();
		DD_belatedPNG.createVmlStyleSheet();
		DD_belatedPNG.fix(".png_bg");
		
		//jquery拡張化
		$.extend($.fn, {
			fixPng: function() {
				if (document.attachEvent) {
					$.each(this, function() {
						DD_belatedPNG.fixPng(this);
					});
				}
				return this;
			},
			fixPngRollOver: function() {
				if (document.attachEvent) {
					$.each(this, function() {
						DD_belatedPNG.fixPngRollOver(this);
					});
				}
				return this;
			}
		});
	})(jQuery);


	function initPngFix()
	{
		//png画像
		var imgobj = $("img");
		$.each(imgobj, function() {
			$(this).fixPng();
		});
		
		//png画像のロールオーバー
		var imgobj_ro = $(".rollover a img");
		$.each(imgobj_ro, function() {
			$(this).fixPngRollOver();
		});
		
	}
	$(document).ready(initPngFix);
}