if(!window.XMLHttpRequest)
{

	/**
	* 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: 0.0.7a
	* 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!
	*/
	
	var DD_belatedPNG = {
	
		ns: 'DD_belatedPNG',
		imgSize: {},
		
		createVmlNameSpace: function() { /* enable VML */
			if (document.namespaces && !document.namespaces[this.ns]) {
			  document.namespaces.add(this.ns, 'urn:schemas-microsoft-com:vml');
			}
			if (window.attachEvent) {
				window.attachEvent('onbeforeunload', function() {
					DD_belatedPNG = null;
				});
			}
		},
		
		createVmlStyleSheet: function() { /* style VML, enable behaviors */
			/*
				Just in case lots of other developers have added
				lots of other stylesheets using document.createStyleSheet
				and hit the 31-limit mark, let's not use that method!
				further reading: http://msdn.microsoft.com/en-us/library/ms531194(VS.85).aspx
			*/
			var style = document.createElement('style');
			document.documentElement.firstChild.insertBefore(style, document.documentElement.firstChild.firstChild);
			var styleSheet = style.styleSheet;
			styleSheet.addRule(this.ns + '\\:*', '{behavior:url(#default#VML)}');
			styleSheet.addRule(this.ns + '\\:shape', 'position:absolute;');
			styleSheet.addRule('img.' + this.ns + '_sizeFinder', 'behavior:none; border:none; position:absolute; z-index:-1; top:-10000px; visibility:hidden;'); /* large negative top value for avoiding vertical scrollbars for large images, suggested by James O'Brien, http://www.thanatopsic.org/hendrik/ */
			this.styleSheet = styleSheet;
		},
		
		readPropertyChange: function() {
			var el = event.srcElement;
			if (event.propertyName.search('background') != -1 || event.propertyName.search('border') != -1) {
				DD_belatedPNG.applyVML(el);
			}
			if (event.propertyName == 'style.display') {
				var display = (el.currentStyle.display == 'none') ? 'none' : 'block';
				for (var v in el.vml) {
					el.vml[v].shape.style.display = display;
				}
			}
			if (event.propertyName.search('filter') != -1) {
				DD_belatedPNG.vmlOpacity(el);
			}
		},
		
		vmlOpacity: function(el) {
			if (el.currentStyle.filter.search('lpha') != -1) {
				var trans = el.currentStyle.filter;
				trans = parseInt(trans.substring(trans.lastIndexOf('=')+1, trans.lastIndexOf(')')), 10)/100;
				el.vml.color.shape.style.filter = el.currentStyle.filter; /* complete guesswork */
				el.vml.image.fill.opacity = trans; /* complete guesswork */
			}
		},
		
		handlePseudoHover: function(el) {
			setTimeout(function() { /* wouldn't work as intended without setTimeout */
				DD_belatedPNG.applyVML(el);
			}, 1);
		},
		
		/**
		* This is the method to use in a document.
		* @param {String} selector - REQUIRED - a CSS selector, such as '#doc .container'
		**/
		fix: function(selector) {
			var selectors = selector.split(','); /* multiple selectors supported, no need for multiple calls to this anymore */
			for (var i=0; i<selectors.length; i++) {
				this.styleSheet.addRule(selectors[i], 'behavior:expression(DD_belatedPNG.fixPng(this))'); /* seems to execute the function without adding it to the stylesheet - interesting... */
			}
		},
		
		applyVML: function(el) {
			el.runtimeStyle.cssText = '';
			this.vmlFill(el);
			this.vmlOffsets(el);
			this.vmlOpacity(el);
			if (el.isImg) {
				this.copyImageBorders(el);
			}
		},
		
		attachHandlers: function(el) {
			var self = this;
			var handlers = {resize: 'vmlOffsets', move: 'vmlOffsets'};
			if (el.nodeName == 'A') {
				var moreForAs = {mouseleave: 'handlePseudoHover', mouseenter: 'handlePseudoHover', focus: 'handlePseudoHover', blur: 'handlePseudoHover'};
				for (var a in moreForAs) {
					handlers[a] = moreForAs[a];
				}
			}
			for (var h in handlers) {
				el.attachEvent('on' + h, function() {
					self[handlers[h]](el);
				});
			}
			el.attachEvent('onpropertychange', this.readPropertyChange);
		},
		
		giveLayout: function(el) {
			el.style.zoom = 1;
			if (el.currentStyle.position == 'static') {
				el.style.position = 'relative';
			}
		},
		
		copyImageBorders: function(el) {
			var styles = {'borderStyle':true, 'borderWidth':true, 'borderColor':true};
			for (var s in styles) {
				el.vml.color.shape.style[s] = el.currentStyle[s];
			}
		},
		
		vmlFill: function(el) {
			if (!el.currentStyle) {
				return;
			} else {
				var elStyle = el.currentStyle;
			}
			for (var v in el.vml) {
				el.vml[v].shape.style.zIndex = elStyle.zIndex;
			}
			el.runtimeStyle.backgroundColor = '';
			el.runtimeStyle.backgroundImage = '';
			var noColor = (elStyle.backgroundColor == 'transparent');
			var noImg = true;
			if (elStyle.backgroundImage != 'none' || el.isImg) {
				if (!el.isImg) {
					el.vmlBg = elStyle.backgroundImage;
					el.vmlBg = el.vmlBg.substr(5, el.vmlBg.lastIndexOf('")')-5);
				}
				else {
					el.vmlBg = el.src;
				}
				var lib = this;
				if (!lib.imgSize[el.vmlBg]) { /* determine size of loaded image */
					var img = document.createElement('img');
					lib.imgSize[el.vmlBg] = img;
					img.className = lib.ns + '_sizeFinder';
					img.runtimeStyle.cssText = 'behavior:none; position:absolute; left:-10000px; top:-10000px; border:none;'; /* make sure to set behavior to none to prevent accidental matching of the helper elements! */
					img.attachEvent('onload', function() {
						this.width = this.offsetWidth; /* weird cache-busting requirement! */
						this.height = this.offsetHeight;
						lib.vmlOffsets(el);
					});
					img.src = el.vmlBg;
					img.removeAttribute('width');
					img.removeAttribute('height');
					document.body.insertBefore(img, document.body.firstChild);
				}
				el.vml.image.fill.src = el.vmlBg;
				noImg = false;
			}
			el.vml.image.fill.on = !noImg;
			el.vml.image.fill.color = 'none';
			el.vml.color.shape.style.backgroundColor = elStyle.backgroundColor;
			el.runtimeStyle.backgroundImage = 'none';
			el.runtimeStyle.backgroundColor = 'transparent';
		},
		
		/* IE can't figure out what do when the offsetLeft and the clientLeft add up to 1, and the VML ends up getting fuzzy... so we have to push/enlarge things by 1 pixel and then clip off the excess */
		vmlOffsets: function(el) {
			var thisStyle = el.currentStyle;
			var size = {'W':el.clientWidth+1, 'H':el.clientHeight+1, 'w':this.imgSize[el.vmlBg].width, 'h':this.imgSize[el.vmlBg].height, 'L':el.offsetLeft, 'T':el.offsetTop, 'bLW':el.clientLeft, 'bTW':el.clientTop};
			var fudge = (size.L + size.bLW == 1) ? 1 : 0;
			
			/* vml shape, left, top, width, height, origin */
			var makeVisible = function(vml, l, t, w, h, o) {
				vml.coordsize = w+','+h;
				vml.coordorigin = o+','+o;
				vml.path = 'm0,0l'+w+',0l'+w+','+h+'l0,'+h+' xe';
				vml.style.width = w + 'px';
				vml.style.height = h + 'px';
				vml.style.left = l + 'px';
				vml.style.top = t + 'px';
			};
			makeVisible(el.vml.color.shape, (size.L + (el.isImg ? 0 : size.bLW)), (size.T + (el.isImg ? 0 : size.bTW)), (size.W-1), (size.H-1), 0);
			makeVisible(el.vml.image.shape, (size.L + size.bLW), (size.T + size.bTW), (size.W), (size.H), 1);
			
			var bg = {'X':0, 'Y':0};
			var figurePercentage = function(axis, position) {
				var fraction = true;
				switch(position) {
					case 'left':
					case 'top':
						bg[axis] = 0;
						break;
					case 'center':
						bg[axis] = .5;
						break;
					case 'right':
					case 'bottom':
						bg[axis] = 1;
						break;
					default:
						if (position.search('%') != -1) {
							bg[axis] = parseInt(position)*.01;
						}
						else {
							fraction = false;
						}
				}
				var horz = (axis == 'X');
				bg[axis] = Math.ceil(fraction ? ( (size[horz?'W': 'H'] * bg[axis]) - (size[horz?'w': 'h'] * bg[axis]) ) : parseInt(position));
				if (bg[axis] == 0) {
					bg[axis]++;
				}
			};
			for (var b in bg) {
				figurePercentage(b, thisStyle['backgroundPosition'+b]);
			}
			
			el.vml.image.fill.position = (bg.X/size.W) + ',' + (bg.Y/size.H);
			
			var bgR = thisStyle.backgroundRepeat;
			var dC = {'T':1, 'R':size.W+fudge, 'B':size.H, 'L':1+fudge}; /* these are defaults for repeat of any kind */
			var altC = { 'X': {'b1': 'L', 'b2': 'R', 'd': 'W'}, 'Y': {'b1': 'T', 'b2': 'B', 'd': 'H'} };
			if (bgR != 'repeat') {
				var c = {'T':(bg.Y), 'R':(bg.X+size.w), 'B':(bg.Y+size.h), 'L':(bg.X)}; /* these are defaults for no-repeat - clips down to the image location */
				if (bgR.search('repeat-') != -1) { /* now let's revert to dC for repeat-x or repeat-y */
					var v = bgR.split('repeat-')[1].toUpperCase();
					c[altC[v].b1] = 1;
					c[altC[v].b2] = size[altC[v].d];
				}
				if (c.B > size.H) {
					c.B = size.H;
				}
				el.vml.image.shape.style.clip = 'rect('+c.T+'px '+(c.R+fudge)+'px '+c.B+'px '+(c.L+fudge)+'px)';
			}
			else {
				el.vml.image.shape.style.clip = 'rect('+dC.T+'px '+dC.R+'px '+dC.B+'px '+dC.L+'px)';
			}
		},
		
		fixPng: function(el) {
			el.style.behavior = 'none';
			if (el.nodeName == 'BODY' || el.nodeName == 'TD' || el.nodeName == 'TR') { /* elements not supported yet */
				return;
			}
			el.isImg = false;
			if (el.nodeName == 'IMG') {
				if(el.src.toLowerCase().search(/\.png$/) != -1) {
					el.isImg = true;
					el.style.visibility = 'hidden';
				}
				else {
					return;
				}
			}
			else if (el.currentStyle.backgroundImage.toLowerCase().search('.png') == -1) {
				return;
			}
			var lib = DD_belatedPNG;
			el.vml = {color: {}, image: {}};
			var els = {shape: {}, fill: {}};
			for (var r in el.vml) {
				for (var e in els) {
					var nodeStr = lib.ns + ':' + e;
					el.vml[r][e] = document.createElement(nodeStr);
				}
				el.vml[r].shape.stroked = false;
				el.vml[r].shape.appendChild(el.vml[r].fill);
				el.parentNode.insertBefore(el.vml[r].shape, el);
			}
			el.vml.image.shape.fillcolor = 'none'; /* Don't show blank white shapeangle when waiting for image to load. */
			el.vml.image.fill.type = 'tile'; /* Ze magic!! Makes image show up. */
			el.vml.color.fill.on = false; /* Actually going to apply vml element's style.backgroundColor, so hide the whiteness. */
			
			lib.attachHandlers(el);
			
			lib.giveLayout(el);
			lib.giveLayout(el.offsetParent);
			
			/* set up element */
			lib.applyVML(el);
		}
		
	};
	try {
		document.execCommand("BackgroundImageCache", false, true); /* TredoSoft Multiple IE doesn't like this, so try{} it */
	} catch(r) {}
	DD_belatedPNG.createVmlNameSpace();
	DD_belatedPNG.createVmlStyleSheet();
	
	// 適用させるタグ一覧
	
	DD_belatedPNG.fix('*');
	
}