var DD_belatedPNG = {
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ns: 'DD_belatedPNG',
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imgSize: {},
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delay: 10,
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nodesFixed: 0,
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createVmlNameSpace: function () { /* enable VML */
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if (document.namespaces && !document.namespaces[this.ns]) {
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document.namespaces.add(this.ns, 'urn:schemas-microsoft-com:vml');
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}
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},
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createVmlStyleSheet: function () {
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var screenStyleSheet, printStyleSheet;
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screenStyleSheet = document.createElement('style');
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screenStyleSheet.setAttribute('media', 'screen');
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document.documentElement.firstChild.insertBefore(screenStyleSheet, document.documentElement.firstChild.firstChild);
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if (screenStyleSheet.styleSheet) {
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screenStyleSheet = screenStyleSheet.styleSheet;
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screenStyleSheet.addRule(this.ns + '\\:*', '{behavior:url(#default#VML)}');
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screenStyleSheet.addRule(this.ns + '\\:shape', 'position:absolute;');
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screenStyleSheet.addRule('img.' + this.ns + '_sizeFinder', 'behavior:none; border:none; position:absolute; z-index:-1; top:-10000px; visibility:hidden;');
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this.screenStyleSheet = screenStyleSheet;
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printStyleSheet = document.createElement('style');
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printStyleSheet.setAttribute('media', 'print');
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document.documentElement.firstChild.insertBefore(printStyleSheet, document.documentElement.firstChild.firstChild);
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printStyleSheet = printStyleSheet.styleSheet;
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printStyleSheet.addRule(this.ns + '\\:*', '{display: none !important;}');
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printStyleSheet.addRule('img.' + this.ns + '_sizeFinder', '{display: none !important;}');
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}
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},
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readPropertyChange: function () {
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var el, display, v;
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el = event.srcElement;
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if (!el.vmlInitiated) {
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return;
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}
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if (event.propertyName.search('background') != -1 || event.propertyName.search('border') != -1) {
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DD_belatedPNG.applyVML(el);
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}
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if (event.propertyName == 'style.display') {
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display = (el.currentStyle.display == 'none') ? 'none' : 'block';
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for (v in el.vml) {
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if (el.vml.hasOwnProperty(v)) {
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el.vml[v].shape.style.display = display;
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}
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}
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}
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if (event.propertyName.search('filter') != -1) {
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DD_belatedPNG.vmlOpacity(el);
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}
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},
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vmlOpacity: function (el) {
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if (el.currentStyle.filter.search('lpha') != -1) {
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var trans = el.currentStyle.filter;
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trans = parseInt(trans.substring(trans.lastIndexOf('=')+1, trans.lastIndexOf(')')), 10)/100;
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el.vml.color.shape.style.filter = el.currentStyle.filter;
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el.vml.image.fill.opacity = trans;
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}
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},
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handlePseudoHover: function (el) {
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setTimeout(function () {
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DD_belatedPNG.applyVML(el);
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}, 1);
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},
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fix: function (selector) {
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if (this.screenStyleSheet) {
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var selectors, i;
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selectors = selector.split(',');
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for (i=0; i<selectors.length; i++) {
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this.screenStyleSheet.addRule(selectors[i], 'behavior:expression(DD_belatedPNG.fixPng(this))');
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}
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}
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},
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applyVML: function (el) {
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el.runtimeStyle.cssText = '';
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this.vmlFill(el);
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this.vmlOffsets(el);
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this.vmlOpacity(el);
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if (el.isImg) {
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this.copyImageBorders(el);
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}
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},
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attachHandlers: function (el) {
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var self, handlers, handler, moreForAs, a, h;
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self = this;
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handlers = {resize: 'vmlOffsets', move: 'vmlOffsets'};
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if (el.nodeName == 'A') {
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moreForAs = {mouseleave: 'handlePseudoHover', mouseenter: 'handlePseudoHover', focus: 'handlePseudoHover', blur: 'handlePseudoHover'};
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for (a in moreForAs) {
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if (moreForAs.hasOwnProperty(a)) {
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handlers[a] = moreForAs[a];
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}
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}
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}
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for (h in handlers) {
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if (handlers.hasOwnProperty(h)) {
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handler = function () {
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self[handlers[h]](el);
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};
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el.attachEvent('on' + h, handler);
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}
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}
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el.attachEvent('onpropertychange', this.readPropertyChange);
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},
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giveLayout: function (el) {
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el.style.zoom = 1;
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if (el.currentStyle.position == 'static') {
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el.style.position = 'relative';
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}
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},
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copyImageBorders: function (el) {
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var styles, s;
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styles = {'borderStyle':true, 'borderWidth':true, 'borderColor':true};
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for (s in styles) {
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if (styles.hasOwnProperty(s)) {
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el.vml.color.shape.style[s] = el.currentStyle[s];
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}
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}
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},
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vmlFill: function (el) {
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if (!el.currentStyle) {
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return;
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} else {
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var elStyle, noImg, lib, v, img, imgLoaded;
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elStyle = el.currentStyle;
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}
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for (v in el.vml) {
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if (el.vml.hasOwnProperty(v)) {
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el.vml[v].shape.style.zIndex = elStyle.zIndex;
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}
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}
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el.runtimeStyle.backgroundColor = '';
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el.runtimeStyle.backgroundImage = '';
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noImg = true;
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if (elStyle.backgroundImage != 'none' || el.isImg) {
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if (!el.isImg) {
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el.vmlBg = elStyle.backgroundImage;
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el.vmlBg = el.vmlBg.substr(5, el.vmlBg.lastIndexOf('")')-5);
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}else {
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el.vmlBg = el.src;
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}
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lib = this;
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if (!lib.imgSize[el.vmlBg]) {
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img = document.createElement('img');
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lib.imgSize[el.vmlBg] = img;
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img.className = lib.ns + '_sizeFinder';
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img.runtimeStyle.cssText = 'behavior:none; position:absolute; left:-10000px; top:-10000px; border:none; margin:0; padding:0;';
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imgLoaded = function () {
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this.width = this.offsetWidth;
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this.height = this.offsetHeight;
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lib.vmlOffsets(el);
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};
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img.attachEvent('onload', imgLoaded);
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img.src = el.vmlBg;
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img.removeAttribute('width');
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img.removeAttribute('height');
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document.body.insertBefore(img, document.body.firstChild);
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}
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el.vml.image.fill.src = el.vmlBg;
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noImg = false;
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}
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el.vml.image.fill.on = !noImg;
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el.vml.image.fill.color = 'none';
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el.vml.color.shape.style.backgroundColor = elStyle.backgroundColor;
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el.runtimeStyle.backgroundImage = 'none';
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el.runtimeStyle.backgroundColor = 'transparent';
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},
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vmlOffsets: function (el) {
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var thisStyle, size, fudge, makeVisible, bg, bgR, dC, altC, b, c, v;
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thisStyle = el.currentStyle;
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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};
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fudge = (size.L + size.bLW == 1) ? 1 : 0;
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makeVisible = function (vml, l, t, w, h, o) {
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vml.coordsize = w+','+h;
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vml.coordorigin = o+','+o;
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vml.path = 'm0,0l'+w+',0l'+w+','+h+'l0,'+h+' xe';
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vml.style.width = w + 'px';
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vml.style.height = h + 'px';
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vml.style.left = l + 'px';
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vml.style.top = t + 'px';
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};
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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);
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makeVisible(el.vml.image.shape, (size.L + size.bLW), (size.T + size.bTW), (size.W), (size.H), 1 );
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bg = {'X':0, 'Y':0};
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if (el.isImg) {
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bg.X = parseInt(thisStyle.paddingLeft, 10) + 1;
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bg.Y = parseInt(thisStyle.paddingTop, 10) + 1;
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}else {
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for (b in bg) {
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if (bg.hasOwnProperty(b)) {
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this.figurePercentage(bg, size, b, thisStyle['backgroundPosition'+b]);
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}
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}
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}
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el.vml.image.fill.position = (bg.X/size.W) + ',' + (bg.Y/size.H);
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bgR = thisStyle.backgroundRepeat;
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dC = {'T':1, 'R':size.W+fudge, 'B':size.H, 'L':1+fudge};
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altC = { 'X': {'b1': 'L', 'b2': 'R', 'd': 'W'}, 'Y': {'b1': 'T', 'b2': 'B', 'd': 'H'} };
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if (bgR != 'repeat' || el.isImg) {
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c = {'T':(bg.Y), 'R':(bg.X+size.w), 'B':(bg.Y+size.h), 'L':(bg.X)};
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if (bgR.search('repeat-') != -1) {
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v = bgR.split('repeat-')[1].toUpperCase();
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c[altC[v].b1] = 1;
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c[altC[v].b2] = size[altC[v].d];
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}
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if (c.B > size.H) {c.B = size.H;}
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el.vml.image.shape.style.clip = 'rect('+c.T+'px '+(c.R+fudge)+'px '+c.B+'px '+(c.L+fudge)+'px)';
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}else {
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el.vml.image.shape.style.clip = 'rect('+dC.T+'px '+dC.R+'px '+dC.B+'px '+dC.L+'px)';
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}
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},
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figurePercentage: function (bg, size, axis, position) {
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var horizontal, fraction;
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fraction = true;
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horizontal = (axis == 'X');
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switch(position) {
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case 'left':
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case 'top':
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bg[axis] = 0;
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break;
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case 'center':
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bg[axis] = 0.5;
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break;
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case 'right':
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case 'bottom':
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bg[axis] = 1;
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break;
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default:
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if (position.search('%') != -1) {
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bg[axis] = parseInt(position, 10) / 100;
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}else {
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fraction = false;
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}
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}
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bg[axis] = Math.ceil( fraction ? ( (size[horizontal?'W': 'H'] * bg[axis]) - (size[horizontal?'w': 'h'] * bg[axis]) ) : parseInt(position, 10) );
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if (bg[axis] % 2 === 0) {
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bg[axis]++;
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}
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return bg[axis];
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},
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fixPng: function (el) {
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el.style.behavior = 'none';
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var lib, els, nodeStr, v, e;
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if (el.nodeName == 'BODY' || el.nodeName == 'TD' || el.nodeName == 'TR') {
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return;
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}
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el.isImg = false;
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if (el.nodeName == 'IMG') {
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if(el.src.toLowerCase().search(/\.png$/) != -1) {
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el.isImg = true;
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el.style.visibility = 'hidden';
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}else {
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return;
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}
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}else if (el.currentStyle.backgroundImage.toLowerCase().search('.png') == -1) {
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return;
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}
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lib = DD_belatedPNG;
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el.vml = {color: {}, image: {}};
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els = {shape: {}, fill: {}};
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for (v in el.vml) {
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if (el.vml.hasOwnProperty(v)) {
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for (e in els) {
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if (els.hasOwnProperty(e)) {
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nodeStr = lib.ns + ':' + e;
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el.vml[v][e] = document.createElement(nodeStr);
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}
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}
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el.vml[v].shape.stroked = false;
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el.vml[v].shape.appendChild(el.vml[v].fill);
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el.parentNode.insertBefore(el.vml[v].shape, el);
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}
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}
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el.vml.image.shape.fillcolor = 'none';
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el.vml.image.fill.type = 'tile';
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el.vml.color.fill.on = false;
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lib.attachHandlers(el);
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lib.giveLayout(el);
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lib.giveLayout(el.offsetParent);
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el.vmlInitiated = true;
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lib.applyVML(el);
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}
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};
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try {
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document.execCommand("BackgroundImageCache", false, true);
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} catch(r) {}
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DD_belatedPNG.createVmlNameSpace();
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DD_belatedPNG.createVmlStyleSheet();
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