var Overlay=new Class({Implements:Options,options:{colour:"#000",opacity:0.7,zIndex:100,onClick:new Class()},initialize:function(a){this.setOptions(a);this.container=new Element("div",{id:"OverlayContainer",styles:{position:"absolute",left:0,top:0,width:"100%",visibility:"hidden",overflow:"hidden",zIndex:this.options.zIndex,opacity:0}}).inject(this.options.container,"inside");this.iframe=new Element("iframe",{id:"OverlayIframe",name:"OverlayIframe",src:"javascript:void(0);",frameborder:0,scrolling:"no",styles:{position:"absolute",top:0,left:0,width:"100%",height:"100%",filter:"progid:DXImageTransform.Microsoft.Alpha(style=0,opacity=0)",opacity:0,zIndex:101}}).inject(this.container,"inside");this.overlay=new Element("div",{id:"Overlay",styles:{position:"absolute",left:0,top:0,width:"100%",height:"100%",zIndex:102,backgroundColor:this.options.colour}}).inject(this.container,"inside");this.container.addEvent("click",function(){this.options.onClick()}.bind(this));this.fade=new Fx.Morph(this.container);this.position();window.addEvent("resize",this.position.bind(this))},position:function(){if(this.options.container==document.body){if(this.options.container.getHeight()>=this.options.container.getScrollHeight()){this.container.setStyles({width:window.getWidth(),height:window.getHeight()})}else{this.container.setStyles({width:window.getWidth(),height:window.getScrollHeight()})}}else{var a=this.options.container.getCoordinates();this.container.setStyles({top:a.top,height:a.height,left:a.left,width:a.width})}},show:function(){this.fade.start({visibility:"visible",opacity:this.options.opacity}).chain(function(){visibility:"hidden"})},hide:function(){this.fade.start({opacity:0}).chain(function(){visibility:"hidden"})}});