/************************************************************************************
** jQuery To Top version 0.1
** (cc) Jorgen Kesseler - jkesseler@gmail.com / verpletterend.nl
** Licensed under the CC-GNU GPL (http://creativecommons.org/licenses/GPL/2.0/)
*************************************************************************************/
;(function( $ ) {
	jQuery.toTop = function( options ) {

		options = $.extend( {}, jQuery.toTop.defaults, options );
		options.css = $.extend( {}, jQuery.toTop.defaults.css, options.css );

		$anchor = $( '<a />', {
            id: options.anchorName,
			name: options.anchorName
		}).prependTo( 'body' );

		var $divTag = $( '<div/>', {
				css: options.css,
				id: options.id
			}
		).appendTo( options.appentTo );

		$toTopLink = $( '<a />', {
			href: '#' + options.anchorName
		})
        .html( options.topLinkText )
		.click ( function( event ) {
            event.preventDefault();

            var scrollWhat = 'html';
            if($.browser.webkit) {
                scrollWhat = 'body';
            }

            $( scrollWhat ).animate({
					scrollTop : 0
				},
				options.scrollSpeed
			);
		})
        .appendTo($divTag);

        if( options.image != '' ) {
            $toTopLink.html('');
            $image = $( '<img />', {
                alt: options.topLinkText,
                css: {
                    border: 'none'
                },
                src: options.image
            })
            .appendTo( $toTopLink );
        }

		$( window ).scroll( function() {
			if ( $( document ).scrollTop() == 0 ) {
				$divTag.slideUp();
			} else {
				$divTag.slideDown();
			}
		});

	}

	jQuery.toTop.defaults = {
		anchorName: 'top',
		appentTo: 'body',
		css: {
			background: '#FFF',
			border: 'none',
			bottom: '-3px',
			display: 'none',
			position: 'fixed',
			zIndex: 999
		},
		id: 'toTop',
		image: '',
		scrollSpeed: 200,
        topLinkText: 'Back to top'
	};

})(jQuery);