// PNGHack 1.0.1 (2008-06-18)
 // Copyright (c) 2008 Yves Van Goethem and png-hack project contributors
 // http://code.google.com/p/png-hack/
 // Distributed under MIT X11 License
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
 // in the Software without restriction, including without limitation the rights
 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 // copies of the Software, and to permit persons to whom the Software is
 // furnished to do so, subject to the following conditions:
 //  
 // The above copyright notice and this permission notice shall be included in
 // all copies or substantial portions of the Software.
 // 
 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 document.write('<!--[if lte IE 6]><style type="text/css">.hack-png{visibility:hidden}</style><![endif]-->');
 var PNGHack = function(spacer) {
         var remoteUrl = 'http://pnghack.googlepages.com/spacer.gif';
         var hackMethod = function(obj, method, that) {
                 // browser check
                 if (that.checkIE && !navigator.userAgent.match(that.checkIE))
                         return;
                 
                 // settings
                 if (!obj) obj = {};
                 var d   = obj.scope || document;
                 var elm = (!obj.elm && method != 2) ? d.all : d.getElementsByTagName(obj.elm);
                 var src = obj.src || 'src';
                 var ext = new RegExp((obj.ext) ? '\\w+.'+obj.ext.toUpperCase() : '\.PNG$');
                 
                 // hack core
                 var hack = function(elm, source) {
                         var style = elm.style;
                         if (!elm.pngsrc)
                                 that.elements.push(elm);
                         elm.pngsrc = elm.getAttribute(source);
                         style.width = elm.clientWidth;
                         style.height = elm.clientHeight;
                         style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+elm.pngsrc+"',sizingMethod='scale')";
                         
                         // using hosted spacer, set it up to rescue local spacer or cancel remotehost
                         if (that.remotehost == true)
                                 spacer = remoteUrl;
                         else if (that.remotehost != false) {
                                 var rescueSpacer = function() {
                                         elm.setAttribute(source, remoteUrl);
                                 };
                                 var setRescueSpacer = function() {
                                         if (elm.readyState == 'complete') {
                                                 elm.detachEvent('onerror', rescueSpacer);
                                                 elm.detachEvent('onreadystatechange', setRescueSpacer);
                                         }
                                 };
                                 elm.attachEvent('onerror', rescueSpacer);
                                 elm.attachEvent('onreadystatechange', setRescueSpacer);
                         }
                         
                         // displaying element / removing hack-png class
                         elm.setAttribute(source, spacer || '_img/pro//spacer.gif');
                         if (elm.className.match(/\bhack-png\b/))
                                 var x = setTimeout(function(){elm.className = elm.className.replace(/hack-png/g,'');clearTimeout(x);},300);
                 };
                 
                 // hack method
                 if (method == 2) {
                         hack(obj.elm, src);
                         return;
                 }
                 
                 // go and crush method
                 for (var i = 0; i < elm.length; ++i) {
                         var isrc = elm[i].getAttribute(src) || '';
                         if (method == 0 && elm[i].className.match(/\bhack-png\b/)
                         || (method == 1 && isrc.toUpperCase().match(ext)))
                                 hack(elm[i], src);
                 }
         };
         return {
                 hackClass : function(obj) {
                         hackMethod(obj, 0, this);
                 },
                 hackExtension : function(obj) {
                         hackMethod(obj, 1, this);
                 },
                 hackElement : function(obj) {
                         hackMethod(obj, 2, this);
                 },
                 elements : [],
                 checkIE : 'MSIE 5\.5|MSIE 6',
                 remotehost : null
         };
 };