I have this javascript code which should show the time. It works. I wan't to be able to add extra time though. Lets say that I want to add 1 hour.

        <script type=text/javascript>

        Date.prototype.addHours = function(h) {    

           this.setTime(this.getTime() + (h*60*60*1000)); 

           return this;   

        }

        // This function gets the current time and injects it into the DOM



        function updateClock() {

            // Gets the current time

            var now = new Date();



            // Get the hours, minutes and seconds from the current time

            var hours = now.getHours();

            var minutes = now.getMinutes();

            var seconds = now.getSeconds();



            // Format hours, minutes and seconds

            if (hours < 10) {

                hours = 0 + hours;

            }

            if (minutes < 10) {

                minutes = 0 + minutes;

            }

            if (seconds < 10) {

                seconds = 0 + seconds;

            }



            // Gets the element we want to inject the clock into

            var elem = document.getElementById('clock');



            // Sets the elements inner HTML value to our clock data

            elem.innerHTML = hours + ':' + minutes + ':' + seconds;

        }

    function start(){

        setInterval('updateClock()', 200);

    }

    </script>

The first function calculates the milisecons that I want to add, and the second function is the live clock. How do I implement the first function into the second one, so I get the working result?