/*
Supersized - Fullscreen Slideshow jQuery Plugin
By Sam Dunn (www.buildinternet.com // www.onemightyroar.com)
Version: supersized.2.0.js // Relase Date: 5/7/09
Website: www.buildinternet.com/project/supersized
Thanks to Aen for preloading, fade effect, & vertical centering
*/

(function($){

	//Resize image on ready or resize
	$.fn.supersized = function() {
		$.inAnimation = false;
		$.paused = false;
		var options = $.extend($.fn.supersized.options);
		
		$(window).bind("load", function(){
			$('#supersize').fadeIn('fast');
			$('#supersize img:first').addClass('activeslide');

			//Slideshow
			if (options.slideshow == 1)
				slideshow_interval = setInterval("nextslide()", options.slide_interval);
				
		});
		
		$(document).ready(function() {
			$('#supersize').resizenow(); 
		});
		
		$(window).bind("resize", function(){
    		$('#supersize').resizenow(); 
		});
		
		$('#supersize').hide();
	};
	
	//Adjust image size
	$.fn.resizenow = function() {
		var options = $.extend($.fn.supersized.options);
	  	return this.each(function() {
	  		
			//Define image ratio
			var ratio = options.startheight/options.startwidth;
			
			//Gather browser and current image size
			var imagewidth = $(this).width();
			var imageheight = $(this).height();
			var browserwidth = $(window).width();
			var browserheight = $(window).height();
			var offset;

			//Resize image to proper ratio
			if ((browserheight/browserwidth) > ratio){
			    $(this).height(browserheight);
			    $(this).width(browserheight / ratio);
			    $(this).children().height(browserheight);
			    $(this).children().width(browserheight / ratio);
			} else {
			    $(this).width(browserwidth);
			    $(this).height(browserwidth * ratio);
			    $(this).children().width(browserwidth);
			    $(this).children().height(browserwidth * ratio);
			}
			if (options.vertical_center == 1){
				$(this).children().css('left', (browserwidth - $(this).width())/2);
				$(this).children().css('top', (browserheight - $(this).height())/2);
			}
			return false;
		});
	};
	
})(jQuery);

//Slideshow Next Slide
function nextslide() {
	if($.inAnimation) return false;
	else $.inAnimation = true;
	var options = $.extend($.fn.supersized.options);
	var currentslide = $('#supersize .activeslide');
	currentslide.removeClass('activeslide');
	
	if ( currentslide.length == 0 ) currentslide = $('#supersize img:last');
		
	var nextslide =  currentslide.next().length ? currentslide.next() : $('#supersize img:first');
	var prevslide =  nextslide.prev().length ? nextslide.prev() : $('#supersize img:last');
	
	$('.prevslide').removeClass('prevslide');
	prevslide.addClass('prevslide');
	
	nextslide.hide().addClass('activeslide')
	if(options.transition == 0){
	    nextslide.show(); $.inAnimation = false;
	    }
	else{
		nextslide.fadeIn(options.fade_interval, function(){$.inAnimation = false;});
		}
		
	$('#supersize').resizenow(); //Fix for resize mid-transition
	return false;
}

var slideshow_go = 0;

$(function(){
	$.fn.supersized.options = {  
		startwidth: 1900,  
		startheight: 1200,
		vertical_center: 1,
		slideshow: slideshow_go,
		slide_interval: 7000,
		fade_interval: 2000,
		transition: 1
	};
	$('#supersize').supersized(); 
});