/*
Script: FixPNG.js
	Extends the Browser hash object to include methods useful in managing the window location and urls.

License:
	http://clientside.cnet.com/wiki/cnet-libraries#license
*/
Browser.combine({
	fixPNG: function(el) {
		try {
			if (Browser.Engine.trident4){
				el = $(el);
				if (!el) return el;
				if (el.get('tag') == "img" && el.get('src').test(".png")) {
					var vis = el.isVisible();
					try { //safari sometimes crashes here, so catch it
						dim = el.getSize();
					}catch(e){}
					if(!vis){
						var before = {};
						//use this method instead of getStyles 
						['visibility', 'display', 'position'].each(function(style){
							before[style] = this.style[style]||'';
						}, this);
						//this.getStyles('visibility', 'display', 'position');
						this.setStyles({
							visibility: 'hidden',
							display: 'block',
							position:'absolute'
						});
						dim = el.getSize(); //works now, because the display isn't none
						this.setStyles(before); //put it back where it was
						el.hide();
					}
					var replacement = new Element('span', {
						id:(el.id)?el.id:'',
						'class':(el.className)?el.className:'',
						title:(el.title)?el.title:(el.alt)?el.alt:'',
						styles: {
							display: vis?'inline-block':'none',
							width: dim.x,
							height: dim.y,
							filter: "progid:DXImageTransform.Microsoft.AlphaImageLoader (src='" 
								+ el.src + "', sizingMethod='scale');"
						},
						src: el.src
					});
					if(el.style.cssText) {
						try {
							var styles = {};
							var s = el.style.cssText.split(';');
							s.each(function(style){
								var n = style.split(':');
								styles[n[0]] = n[1];
							});
							replacement.setStyle(styles);
						} catch(e){ dbug.log('fixPNG1: ', e)}
					}
					if(replacement.cloneEvents) replacement.cloneEvents(el);
					replacement.replaces(el);
				} else if (el.get('tag') != "img") {
					var imgURL = el.getStyle('background-image');
					if (imgURL.test(/\((.+)\)/)){
						el.setStyles({
							background: '',
							filter: "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled='true', sizingMethod='crop', src=" + imgURL.match(/\((.+)\)/)[1] + ")"
						});
					};
				}
			}
		} catch(e) {dbug.log('fixPNG2: ', e)}
	}
});
if(Browser.Engine.trident4) window.addEvent('domready', function(){$$('img.fixPNG').each(Browser.fixPNG)});

/*
Script: Element.Shortcuts.js
	Extends the Element native object to include some shortcut methods.

License:
	http://clientside.cnet.com/wiki/cnet-libraries#license
*/

Element.implement({
	isVisible: function() {
		return this.getStyle('display') != 'none';
	},
	toggle: function() {
		return this[this.isVisible() ? 'hide' : 'show']();
	},
	hide: function() {
		var d;
		try {
			//IE fails here if the element is not in the dom
			d = this.getStyle('display');
		} catch(e){}
		this.store('originalDisplay', d||'block'); 
		this.setStyle('display','none');
		return this;
	},
	show: function(display) {
		original = this.retrieve('originalDisplay')?this.retrieve('originalDisplay'):this.get('originalDisplay');
		this.setStyle('display',(display || original || 'block'));
		return this;
	},
	swapClass: function(remove, add) {
		return this.removeClass(remove).addClass(add);
	},
	//TODO
	//DO NOT USE THIS METHOD
	//it is temporary, as Mootools 1.1 will negate its requirement
	fxOpacityOk: function(){
		return !Browser.Engine.trident4;
	}
});