ÿþ/**************************************************************



	Script		: Overlay

	Version		: 1.2

	Authors		: Samuel birch

	Desc		: Covers the window with a semi-transparent layer.

	Licence		: Open Source MIT Licence



	Modified: Leonardo Di Lella (leonardo@dilella.org) - MooTools 1.2 support



**************************************************************/



var Overlay = new Class({

	

	getOptions: function(){

		return {

			colour: '#000',

			opacity: 0.7,

			zIndex: 1,

			container: document.body,

			onClick: new Class()

		};

	},



	initialize: function(options){

		this.setOptions(this.getOptions(), options);

		

		this.options.container = $(this.options.container);

		

		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': 1,

			'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, 'opacity').set(0);

		this.position();

		

		window.addEvent('resize', this.position.bind(this));

	},

	

	position: function(){ 

		if(this.options.container == document.body){ 

			var h = document.getScrollSize().x+'px'; 

			//this.container.setStyles({top: '0px', height: h});

			this.container.setStyles({top: '0px', height: '1805px'});

		}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':[0,this.options.opacity], 'visibility':'hidden'});

	}

	

});

Overlay.implement(new Options);



/*************************************************************/