How do I open fancybox by jquery

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C#

according to this link
i can open fancybox with text

$.fancybox.open('<div class="message"><h2>Hello!</h2><p>You are awesome!</p></div>');

but this code does not show images just say
"The requested content cannot be loaded.
Please try later"

$.fancybox.open([
	{
		src  : '1_b.jpg',
		opts : {
			caption : 'First caption'
		}
	},
	{
		src  : '2_b.jpg',
		opts : {
			caption : 'Second caption'
		}
	}
], {
	loop : false
});

What I have tried:

work fine

$.fancybox.open('<div class="message"><h2>Hello!</h2><p>You are awesome!</p></div>');

not working

$.fancybox.open([
                {
                    src: '/0TestFancyBox/clock.png',
                    type: 'image',
                    opts: {
                        caption: 'First caption'
                    }
                },
                {
                    src: '/0TestFancyBox/flowers.png',
                    type: 'image',
                    opts: {
                        caption: 'Second caption'
                    }
                }
            ], {
                loop: false
            });