var times_scrolled = 0;

function scroll_the_div(parent_item, amt, limit)
{
        var selector = "#" + parent_item + " .scroll_div";
        var left_offset = parseInt($(selector).css('left'));
        left_offset = left_offset + amt;

        if ( left_offset <= 0  ) //prevent going too far left
        {
                if ( amt < 0 ) //try to scroll left
                {
                        if ( times_scrolled < limit )
                        {
                                $(selector).animate({left:left_offset+"px"}, {queue:true, duration:1200});

                                times_scrolled++;
                        }
                }
                else //try to scroll right
                {
                        $(selector).animate({left:left_offset+"px"}, {queue:true, duration:1200});

                        times_scrolled--;
                }
        }

        return false;
}

$(document).ready(function(){
        //find out how far right we can scroll (the upper limit of items/7 - 1)
        var greener_grass_limit = Math.ceil( $("#greener_grass .body .greener_item").size() /7) - 1;

        $("#greener_grass .body a.left_arrow").click(function(){
                scroll_the_div("greener_grass",644,greener_grass_limit);
        });

        $("#greener_grass .body a.right_arrow").click(function(){
                scroll_the_div("greener_grass",-644,greener_grass_limit);
        });
});