/*

    ----------------------------------------------------------------------------------------------------
    Accessible News Slider
    ----------------------------------------------------------------------------------------------------
    
    Author:
    Brian Reindel
    
    Author URL:
    http://blog.reindel.com

    License:
    Unrestricted. This script is free for both personal and commercial use.

*/

jQuery.fn.accessNews = function( settings ) {
    settings = jQuery.extend({
        headline : "Top Stories",
        speed : "normal",
        slideBy : 2
    }, settings);
    return this.each(function() {
        jQuery.fn.accessNews.run( jQuery( this ), settings );
    });
};
jQuery.fn.accessNews.run = function( $this, settings ) {
    jQuery( ".javascript_css", $this ).css( "display", "none" );
    var ul = jQuery( "ul:eq(0)", $this );
    var li = ul.children();
    if ( li.length > settings.slideBy ) {
        var $next = jQuery( ".next > a", $this );
        var $back = jQuery( ".back > a", $this );
        var liWidth = jQuery( li[0] ).width();
        var animating = false;
        ul.css( "width", ( li.length * liWidth ) );
        $next.click(function() {
            if ( !animating ) {
                animating = true;
                offsetLeft = parseInt( ul.css( "left" ) ) - ( liWidth * settings.slideBy );
                if ( offsetLeft + ul.width() > 0 ) {
                    $back.css( "display", "block" );
                    ul.animate({
                        left: offsetLeft
                    }, settings.speed, function() {
                        if ( parseInt( ul.css( "left" ) ) + ul.width() <= liWidth * settings.slideBy ) {
                            $next.css( "display", "none" );
                        }
                        animating = false;
                    });
                } else {
                    animating = false;
                }
            }
            return false;
        });
        $back.click(function() {
            if ( !animating ) {
                animating = true;
                offsetRight = parseInt( ul.css( "left" ) ) + ( liWidth * settings.slideBy );
                if ( offsetRight + ul.width() <= ul.width() ) {
                    $next.css( "display", "block" );
                    ul.animate({
                        left: offsetRight
                    }, settings.speed, function() {
                        if ( parseInt( ul.css( "left" ) ) == 0 ) {
                            $back.css( "display", "none" );
                        }
                        animating = false;
                    });
                } else {
                    animating = false;
                }
            }
            return false;
        });
        $next.css( "display", "block" )
            .parent().after( [ "<p class=\"view_all\">", settings.headline, " - ", li.length, " total ( <a href=\"#\">view all</a> )</p>" ].join( "" ) );
        jQuery( ".view_all > a, .skip_to_news > a", $this ).click(function() {
            var skip_to_news = ( jQuery( this ).html() == "Skip to News" );
            if ( jQuery( this ).html() == "view all" || skip_to_news ) {
                ul.css( "width", "auto" ).css( "left", "0" );
                $next.css( "display", "none" );
                $back.css( "display", "none" );
                if ( !skip_to_news ) {
                    jQuery( this ).html( "view less" );
                }
            } else {
                if ( !skip_to_news ) {
                    jQuery( this ).html( "view all" );
                }
                ul.css( "width", ( li.length * liWidth ) );
                $next.css( "display", "block" );
            }
            return false;
        });
    }
};