/**
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 * Released under the MIT license
 *
 * Copyright (C) 2008-2010 Nikolay Nemshilov
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a=e||this.element.getStyle('backgroundColor');if(this._transp(a)){this.onFinish(function(){this.element.style.backgroundColor='transparent'});a=this._getBGColor(this.element)}this.element.style.backgroundColor=(s||this.options.color);return this.$super({backgroundColor:a})}});Fx.Twin=new Class(Fx.Morph,{finish:function(){if(this.how=='out')this.element.hide();return this.$super()},setHow:function(h){this.how=h||'toggle';if(this.how=='toggle')this.how=this.element.visible()?'out':'in'}});Fx.Slide=new Class(Fx.Twin,{extend:{Options:Object.merge(Fx.Options,{direction:'top'})},prepare:function(h){this.setHow(h);var e=this.element;e.show();this.sizes=e.sizes();this.styles={};$w('overflow height width marginTop marginLeft').each(function(k){this.styles[k]=e.style[k]},this);e.style.overflow='hidden';this.onFinish('_getBack').onCancel('_getBack');return this.$super(this._getStyle(this.options.direction))},_getBack:function(){this.element.setStyle(this.styles)},_getStyle:function(d){var f={},s=this.sizes,m='marginLeft',a='marginTop',b=this.styles[m].toFloat()||0,c=this.styles[a].toFloat()||0;if(this.how=='out'){f[['top','bottom'].includes(d)?'height':'width']='0px';if(d=='right')f[m]=b+s.x+'px';else if(d=='bottom')f[a]=c+s.y+'px'}else if(this.how=='in'){var e=this.element.style;if(['top','bottom'].includes(d)){f.height=s.y+'px';e.height='0px'}else{f.width=s.x+'px';e.width='0px'}if(d=='right'){f[m]=b+'px';e[m]=b+s.x+'px'}else if(d=='bottom'){f[a]=c+'px';e[a]=c+s.y+'px'}}return f}});Fx.Fade=new Class(Fx.Twin,{prepare:function(h){this.setHow(h);if(this.how=='in')this.element.setStyle({opacity:0}).show();return this.$super({opacity:isNumber(h)?h:this.how=='in'?1:0})}});Fx.Scroll=new Class(Fx,{initialize:function(e,o){this.$super(e.prompt?e.document[Browser.WebKit?'body':'documentElement']:e,o)},prepare:function(v){this.before={};this.after=v;if(defined(v.x))this.before.x=this.element.scrollLeft;if(defined(v.y))this.before.y=this.element.scrollTop},render:function(d){var 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