var Overlay=new Class({getOptions:function(){return{colour:'#000',opacity:0.5,zIndex:199,container:$(document.body),onClick:new Class()};},initialize:function(options)
{this.setOptions(this.getOptions(),options);this.container=new Element('div').setProperty('id','OverlayContainer').setStyles({position:'absolute',left:'0px',top:'0px',width:'100%',visibility:'hidden',overflow:'hidden',zIndex:this.options.zIndex}).inject(this.options.container,'inside');this.iframe=new Element('iframe').setProperties({id:'OverlayIframe',name:'OverlayIframe',src:'javascript:void(0);',frameborder:0,scrolling:'no'}).setStyles({position:'absolute',top:0,left:0,width:'100%',height:'100%',filter:'progid:DXImageTransform.Microsoft.Alpha(style=0,opacity=0)',opacity:0,zIndex:1}).inject(this.container,'inside');this.overlay=new Element('div').setProperty('id','Overlay').setStyles({position:'absolute',left:'0px',top:'0px',width:'100%',height:'100%',zIndex:2,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(){this.container.setStyle('height','0');if(this.options.container==document.body){var browser=navigator.userAgent.toLowerCase();if(browser.contains("safari")==true){var nWidth=window.getSize().x.toInt()-15;}else{var nWidth=window.getSize().x.toInt();}
if(this.options.container.getSize().y>=this.options.container.getScrollSize().y){this.container.setStyles({width:nWidth+'px',height:window.getSize().y+'px'});}else{this.container.setStyles({width:nWidth+'px',height:window.getScrollSize().y+'px'});}}else{var myCoords=this.options.container.getCoordinates();this.container.setStyles({top:myCoords.top+'px',height:myCoords.height+'px',left:myCoords.left+'px',width:myCoords.width+'px'});};},show:function(){this.fade.start({opacity:[0,this.options.opacity],visibility:'visible'});},hide:function(){this.fade.start({opacity:[this.options.opacity,0]}).chain(function(){this.start({visibility:'hidden'});})}});Overlay.implement(new Options);