RSS Feed Calendar Plugin

This plugin is initialized like so:

$("#calendar").ksdCalendar({
    feedUrl: "http://www.kent.k12.wa.us/site/RSS.aspx?DomainID=275&ModuleInstanceID=4937&PageID=4334",
    elemHeight: 750
});

I would like a review on the code, structure, or anything else that comes to mind. What this plugin does is take an RSS feed from JGFeed, parse the entries, then pass them into another calendar plugin which in turn builds and displays the calendar.

(function ( $, window, document, undefined ) {
    "use strict";
    var Calendar = {

        init: function(options, elem) {

            this.options = $.extend( {}, this.options, options );
            this.elem = $(elem);

            this.setupAjax();
            this.getFeed();

            return this;
        },

        options: {
            feedUrl: "",
            elemHeight: 750
        },

        entries: [],

        getFeed: function() {
            var self = this;
            $.jGFeed(this.options.feedUrl, function (feeds) {

                if (!feeds) {
                    return false;
                }

                $.extend(self.entries, feeds.entries);

                self.parseEntries();
            }, 100);
        },

        parseEntries: function() {
            //Rename to fit plugin requirements
            for (var i = 0; i < this.entries.length; i++) {
                var entry = this.entries[i];
                    entry["allDay"] = false;

                //Rename
                entry["url"] = entry["link"];
                delete entry["link"];

                var position = entry.title.indexOf(' - ');

                if (position === -1) {
                    //All day event
                    entry.allDay = true;
                    var space = entry.title.indexOf(" "),
                        title = entry.title.substring(space + 1),
                        firstHalf = entry.title.slice(0, space); //Start date, no time because it's all day event
                } else {
                    var firstHalf = entry.title.slice(0, position), //Start date/time
                        secondHalf = entry.title.substring(position + 3);

                    if (secondHalf.indexOf("AM") !== -1) {
                        var title = secondHalf.substring(secondHalf.indexOf("AM") + 3); //Title if has AM
                    } else {
                        var title = secondHalf.substring(secondHalf.indexOf("PM") + 3); //Title if has PM
                    }

                    secondHalf = secondHalf.slice(0, -(title.length + 1)); //End date/time
                }

                entry["start"] = Date.parse(firstHalf);
                entry["end"] = Date.parse(secondHalf);
                entry.title = title;
            };

            this.setUpCalendar();
        },

        setUpCalendar: function() {
            this.elem.fullCalendar({
                editable:   false,
                weekends:   true,
                header: {
                    left:       'month basicDay',
                    center:     'title',
                    right:      'today prev, next'
                },
                height:     this.options.elemHeight,
                events:     this.entries
            });
        }
    };

    if ( typeof Object.create !== 'function' ) {
        Object.create = function (o) {
            function F() {}
            F.prototype = o;
            return new F();
        };
    }


    $.fn.ksdCalendar = function( options ) {
        if (this.length) {
            return this.each(function() {
                var myCalendar = Object.create(Calendar);
                myCalendar.init(options, this);
                $.data(this, 'ksdCalendar', myCalendar);
            });
        }
    };

})( jQuery, window, document );