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jQuery lights off effect

A Pen By John Tsevdos

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JS

            
              $(document).ready(function(){
	
		// Build the link
		$('.lightsoff').append('<div class="lightsoffbtn"><a href="#">Lights Off</a></div>');
		
		// Prepare the overlay
		$('body').append('<div class="lightsoff-ovelay off" style="position:relative; z-index:1; display:none;">close</div>');
		
		// Variables
		var $overlay = $('.lightsoff-ovelay'),
			$containers = $('.lightsoff'),
			$lightsoffTrigger = $('.lightsoffbtn a');
	
			
		// LightsOff events
		$lightsoffTrigger.each(function(){
		
			// Variables
			var $container = $(this).parent().parent();
	
			// Apply some CSS
			$container.css({ 'position': 'relative' });
	
			$(this).click(function(e){
	
				e.preventDefault();
					
				if ( $overlay.hasClass('off') ) {
	
					$container.css({
						'z-index': 4000
					});
	
					$overlay.css({
						'position': 'fixed',
						'display': 'block',
						'text-indent': -99999,
						'background-color' : '#000000',
						'width': '100%',
						'height': '100%',
						'top': 0,
						'left': 0,
						'z-index': 3000,
						'opacity': 0.7,
						'cursor': 'pointer'
					});
	
					$overlay.removeClass('off').addClass('on').fadeIn();
	
				} else if ( $overlay.hasClass('on') ) {
					e.preventDefault();
					$containers.css({ 'z-index': 0 });
					$overlay.removeClass('on').addClass('off').fadeOut();
				}
			
			});
		
		});
		
		$overlay.click(function(e){
			e.preventDefault();
			$containers.css({ 'z-index': 0 });
			$overlay.removeClass('on').addClass('off').fadeOut();
		});
	
	});
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