jQuery.fn.simpleLightbox = function(_options){
	// defaults options	
	var _options = jQuery.extend({
		lightboxContentBlock: '.lightbox',
		faderOpacity: 0.6,
		faderBackground: '#000000',
		closeLink:'a.close-btn ',
		href:true,
		onClick: null
	},_options);

	return this.each(function(i, _this){
		var _this = jQuery(_this);
		if (!_options.href)
			_this.lightboxContentBlock = _options.lightboxContentBlock;
		else _this.lightboxContentBlock = _this.attr('href');
		
		if (_this.lightboxContentBlock.indexOf("#",0) > 0)
		{
			var tab = _this.lightboxContentBlock.split("#");
			_this.lightboxContentBlock = "#"+tab[1];
		}
		
		if (_this.lightboxContentBlock != '' && _this.lightboxContentBlock.length > 1) {
			_this.faderOpacity = _options.faderOpacity;
			_this.faderBackground = _options.faderBackground;
			_this.closeLink = _options.closeLink;

			var _fader;
			var _lightbox = $(_this.lightboxContentBlock);
			if (!jQuery('div.lightbox-fader').length)
				_fader = $('body').append('<div class="lightbox-fader"></div>');
			
			_fader = jQuery('div.lightbox-fader');
			_lightbox.css('zIndex',999);
			_fader.css({
				opacity:_this.faderOpacity,
				backgroundColor:_this.faderBackground,
				display:'none',
				position:'absolute',
				top:0,
				left:0,
				zIndex:998,
				textIndent: -9999
			}).text('$nbsp');

			_lightbox.shownFlag = false;

			_this.click(function(){
				if (jQuery.isFunction(_options.onClick)) {
					_options.onClick.apply(_this);
				}
				_fader.fadeIn(300, function(){
					_lightbox.shownFlag = true;
					_lightbox.fadeIn(400);
					jQuery.fn.simpleLightbox.positionLightbox(_lightbox);
				});
				return false;
			});
			jQuery(_this.closeLink).click(function(){
				_lightbox.fadeOut(400, function(){
					_fader.fadeOut(300);
				});
				return false;
			});
			_fader.click(function(){
				_lightbox.fadeOut(400, function(){
					_fader.fadeOut(300);
				});
				return false;
			});
			
			jQuery.fn.simpleLightbox.positionLightbox = function (_lbox) {
				if(!_lbox.shownFlag) return false;
				var _height = 0;
				var _width = 0;
				var _minWidth = $('body > div:eq(0)').outerWidth();
				_minWidth = 1000;
				if (window.innerHeight) {
					_height = window.innerHeight;
					_width = window.innerWidth;
				} else {
					_height = document.documentElement.clientHeight;
					_width = document.documentElement.clientWidth;
				}
				
				var arrayPageSize = getPageSize();
				_widthFader  = arrayPageSize[0];
				_heightFader = arrayPageSize[1];
				var _thisHeight = _lbox.outerHeight();
				var _page = $('body > div:eq(0)');

				if (_lbox.length) {
					if (_height > _page.outerHeight(true)) _fader.css('height',_heightFader); else _fader.css('height',_heightFader);
					if (_width < _minWidth) {_fader.css('width',_widthFader);} else {_fader.css('width','100%');}
					if (_height > _thisHeight) {
						if (!window.innerHeight) {
							_lbox.css({
								position:'absolute',
								top: (document.documentElement.scrollTop + (_height - _thisHeight) / 2)+"px"
							});
						} else {
							_lbox.css({
								position:'fixed',
								top: ((_height - _lbox.outerHeight()) / 2)+"px"
							});
						}
					}
					else {
						_lbox.css({
							position:'absolute',
							top: 0
						});
						_fader.css({
							height:_heightFader
						});
					}
					if (_width > _lbox.outerWidth()) _lbox.css({left:(_width - _lbox.outerWidth()) / 2 + "px"});
					else _lbox.css({position:'absolute',left: 0});
				}
			}
			
			jQuery(window).resize(function(){
				jQuery.fn.simpleLightbox.positionLightbox(_lightbox);
			});
			
			jQuery.fn.simpleLightbox.positionLightbox(_lightbox);
				$(document).keydown(function (e) {
				if (!e) evt = window.event;
				if (e.keyCode == 27) {
					_lightbox.fadeOut(400, function(){
						_fader.fadeOut(300);
					});
				} 
			});
		}
	});
}

function getPageSize() {
	        
     var xScroll, yScroll;
	
	if (window.innerHeight && window.scrollMaxY) {	
		xScroll = window.innerWidth + window.scrollMaxX;
		yScroll = window.innerHeight + window.scrollMaxY;
	} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
		xScroll = document.body.scrollWidth;
		yScroll = document.body.scrollHeight;
	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
		xScroll = document.body.offsetWidth;
		yScroll = document.body.offsetHeight;
	}
	
	var windowWidth, windowHeight;
	
	if (self.innerHeight) {	// all except Explorer
		if(document.documentElement.clientWidth){
			windowWidth = document.documentElement.clientWidth; 
		} else {
			windowWidth = self.innerWidth;
		}
		windowHeight = self.innerHeight;
	} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
		windowWidth = document.documentElement.clientWidth;
		windowHeight = document.documentElement.clientHeight;
	} else if (document.body) { // other Explorers
		windowWidth = document.body.clientWidth;
		windowHeight = document.body.clientHeight;
	}	
	
	// for small pages with total height less then height of the viewport
	if(yScroll < windowHeight){
		pageHeight = windowHeight;
	} else { 
		pageHeight = yScroll;
	}

	// for small pages with total width less then width of the viewport
	if(xScroll < windowWidth){	
		pageWidth = xScroll;		
	} else {
		pageWidth = windowWidth;
	}

	return [pageWidth,pageHeight];
}

$(document).ready(function(){
	$('a.open-popup').simpleLightbox({
		closeLink:'a.close-btn'
	});
});