/*
* jQuery vScroll
* Copyright (c) 2011 Simon Hibbard
* 
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:

* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
* 
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE. 
*/

/*
* Version: V1.2.0
* Release: 10-02-2011
* Based on jQuery 1.4.2
*/



(function($) {
    var vscrollid = 0;

    $.fn.vScroll = function(options) {
        var options = $.extend({}, { speed: 500, oSet: 0, height: 300, upID: "#up-arrow", downID: "#bottom-arrow", cycle: true }, options);



        return this.each(function() {
            vscrollid++;
            obj = $(this);
            var newid = vscrollid;


            //alert(options.height + "  " + obj.outerHeight());
            if (options.height >= obj.height()) {
                $(options.upID).css("display", "none");
                $(options.downID).css("display", "none");
            } else {
                $(options.upID).css("display", "none");
                $(options.downID).css("display", "block");
            }

            obj.css("overflow", "hidden");
            obj.css("position", "relative");
            obj.css("height", options.height + "px");
            /*obj.children().each(
            function(intIndex) {
            $(this).addClass("vscroll-" + vscrollid + "-" + intIndex);
            });
            */
            var intervalID;




            $(options.downID).mouseover(function() {
                intervalID = setInterval(scrollDown, options.speed);
            });

            $(options.downID).mouseout(function() {
                clearInterval(intervalID);
            });


            function scrollDown() {

                if ($("#vscroller-" + newid).position().top > (options.height - $("#vscroller-" + newid).height())) {
                    $("#vscroller-" + newid).animate({
                        top: "-=" + 3 + "px"
                    }, options.speed);
                    $(options.upID).css("display", "block");
                    $(options.downID).css("display", "block");
                } else {
                    //$("#vscroller-" + newid).animate({ top: (options.height - $("#vscroller-" + newid).height()) + "px" }, options.speed);
                    $(options.downID).css("display", "none");
                }
            }

            $(options.upID).mouseover(function() {
                intervalID = setInterval(scrollUp, options.speed);
            });

            $(options.upID).mouseout(function() {
                clearInterval(intervalID);
            });

            function scrollUp() {
                if ($("#vscroller-" + newid).position().top + 3 < 0) {
                    $("#vscroller-" + newid).animate({
                        top: "+=" + 3 + "px"
                    }, options.speed);
                    $(options.upID).css("display", "block");
                    $(options.downID).css("display", "block");
                    // alert($("#vscroller-" + newid).position().top);
                } else {
                    $("#vscroller-" + newid).animate({
                        top: 0 + "px"
                    }, options.speed);
                    $(options.upID).css("display", "none");
                }
            }
            
            obj.children().wrapAll("<div style='position: relative; top: " + options.oSet + "px;' id='vscroller-" + newid + "'></div>");

        });

    };

})(jQuery);