code to create a sudo checkbox, this way you can add any styling you like

sudo-checkbox.js

	/**
	 * author kkemple@pixafy.com
	 */
	(function( $ ) {
		$('body').on('click', '.check-style', function() {
			var self = $( this );
			var checkbox = self.children( 'input[type="checkbox"]' );

			if( $( checkbox ).prop('checked') ) {
				$( checkbox ).prop( 'checked', false );
				$( self ).css({
					'background-position': '0 0'
				});
			} else {
				$( checkbox ).prop( 'checked', true );
				$( self ).css({
					'background-position': '0 -21px'
				});
			}
		});
	})( jQuery );