Converting 24 hour clock to 12 hour clock using JS

Question

How do I change the format of the time?  Currently the time is based on a 24 hour clock.  I'd like to have a 12 hour clock with am/pm designations.  Here is the JS:
//first lets get the current time by parsing the title from the data query
                            var timeIndexStart = data.query.results.channel.item.title.lastIndexOf(' at ') + 4; //4 is the size of the string " at " (whitespace included)
                            var timeIndexEnd = data.query.results.channel.item.title.length - 4; //4 is the number of characters from the end of the string (1 space + time zone)
                            var timeZoneStart = data.query.results.channel.item.title.lastIndexOf(" ") + 1;
                            //lets go ahead and store the time now
                            //format = "Conditions for "city", "state" at [time] [time zone]"
                            var time = data.query.results.channel.item.title.substring(timeIndexStart, timeIndexEnd);
                            var timeZone = data.query.results.channel.item.title.substring(timeZoneStart);
                            var d = new Date();
                            var localTime = d.getTime();
                            var localOffset = d.getTimezoneOffset() * 60000;
                            var utc = localTime + localOffset;
                            var currentTime;
                            if (options.relativeTimeZone) {
                                var timeByLocation = new Object();
                                timeByLocation["EDT"] = utc + (3600000 * -5);
                                timeByLocation["EST"] = utc + (3600000 * -5);
                                timeByLocation["CDT"] = utc + (3600000 * -6);
                                timeByLocation["CST"] = utc + (3600000 * -6);
                                timeByLocation["MDT"] = utc + (3600000 * -7);
                                timeByLocation["MST"] = utc + (3600000 * -7);
                                timeByLocation["PDT"] = utc + (3600000 * -8);
                                timeByLocation["PST"] = utc + (3600000 * -8);
                                timeByLocation["HST"] = utc + (3600000 * -10);
                                timeByLocation["AKDT"] = utc + (3600000 * -9);
                                timeByLocation["AKST"] = utc + (3600000 * -9);
                                currentTime = timeByLocation[timeZone];
                            else {
                                currentTime = localTime;
                            var today = new Date(currentTime);
                            var dstOffset = 0;
                            var hourMod = "";
                            var minMod = "";
                            var background = "";
                            if (today.dst())
                                dstOffset = 1;
                            if (today.getHours() + dstOffset < 10)
                                hourMod = "0";
                            if (today.getMinutes() < 10)
                                minMod = "0";

Answer 1

Does this help?
javascript source code: 12 hour clock
Thanks,
Preran