$(document).ready(function(){
	/* This code is executed after the DOM has been completely loaded */

	// Assigning the jQuery object to a variable for speed:
	var main = $('#main');	

	// Setting the width of the photoshoot area to 
	// 1024 px or the width of the document - whichever is smallest:
	// download by http://sc.xueit.com
	main.width(Math.min(1024,$(document).width()));
	
	// Creating an array with four possible backgrounds and their sizes:
	
	var pics = new Array(						 
							{ url:'http://farm4.static.flickr.com/3595/3405361333_77f2a5e731_b.jpg', size:{x:1024,y:677}},
							{ url:'http://farm4.static.flickr.com/3028/2753126743_4249a4e948_b.jpg', size:{x:1024,y:768}},
							{ url:'http://farm4.static.flickr.com/3641/3595250019_5a1237899a_b.jpg', size:{x:1024,y:768}},
							{ url:'http://farm3.static.flickr.com/2592/4018062274_1f7f23597d_o.jpg', size:{x:1158,y:756}}
	);
	
	// Choosing a random picture to be passed to the PhotoShoot jQuery plug-in:
	
	var bg = pics[parseInt(Math.random()*4)];
	
	// Creating an options object (try tweeking the variables):
	
	var opts = {
		image		:	bg.url,
		onClick		:	shoot,
		opacity		:	0.8,
		blurLevel	:	4
	}
	
	// Converting the #main div to a photoShoot stage:
	
	main.photoShoot(opts);

	// Adding the album holder to the stage:
	$('<div class="album">').html('<div class="slide" />').appendTo(main);


	// Our own shoot function (it is passed as onClick to the options array above):
	
	function shoot(position){
		// This function is called by the plug-in when the button is pressed
		
		// Setting the overlay's div to white will create the illusion of a camera flash:
		main.find('.overlay').css('background-color','white');
		
		// The flash will last for 100 milliseconds (a tenth of the second):
		setTimeout(function(){main.find('.overlay').css('background-color','')},100);
		
		// Creating a new shot image:
		var newShot = $('<div class="shot">').width(150).height(100);

		newShot.append( $('<img src="'+bg.url+'" width="'+(bg.size.x/2)+'" height="'+(bg.size.y/2)+'" />').css('margin',-position.top*0.5+'px 0 0 -'+position.left*0.5+'px') );
		
		// Removing the fourth shot (the count starts from 0):
		$('.shot').eq(3).remove();
		
		// Adding the newly created shot to the album div, but moved 160px to the right.
		// We start an animation to slide it in view:
		
		newShot.css('margin-right',-160).prependTo('.album .slide').animate({marginRight:0},'slow');	
	}

});
