javascript: get month/year/day from unix timestamp

Question

I have a unix timestamp, e.g., 1313564400000.00. How do I convert it into Date object and get month/year/day accordingly? The following won't work:

function getdhm(timestamp) {
        var date = Date.parse(timestamp);
        var month = date.getMonth();
        var day = date.getDay();
        var year = date.getYear();

        var formattedTime = month + '/' + day + '/' + year;
        return formattedTime;

    }

Answer 1

var date = new Date(1313564400000);
var month = date.getMonth();

etc.

This will be in the user's browser's local time.