Random Renewal

My problem

I have the problem that the latitude and longitude is continuously randomly refreshed.

I want this to refresh only every 15 seconds. How can I fix this problem?

Why I want this

If I could get control over the refreshing moments I can use a weather api to get more details of the location.

The problem with the weather api is that I can only do 10 calls in a minute.

The code

I call a javascript function on pageload with:

$cs = Yii::app()->getClientScript();


Yii::app()->clientScript->registerScript('getLocation',"document.ready(getLocation());" ,CClientScript::POS_HEAD); // is called ones on pageload.

The javascriptcode is:

function getLocation() {


        // maximumAge at 60000 (1 minutes) - Get new location if the cached location is older then maximumAge

        // timeout at 15000 milliseconds (15 seconds) - Timeout between new location calls

        var options = {enableHighAccuracy:true, maximumAge:60000, timeout:15000};

        geoLocation = navigator.geolocation;

        watchID     = geoLocation.watchPosition( getLocationDetails, errorHandler, options );


        alert("Sorry, browser does not support geolocation!");



That calls getLocationDetails:

function getLocationDetails(position) {

    // Let's fill the form with the latitude, longitude and accuracy

    document.getElementById("Waarnemingen_latitude").value   = position.coords.latitude.toFixed(7);

    document.getElementById("Waarnemingen_longitude").value  = position.coords.longitude.toFixed(<img src='http://www.yiiframework.com/forum/public/style_emoticons/default/cool.gif' class='bbc_emoticon' alt='8)' />;

    document.getElementById("Waarnemingen_accuracy").value   = position.coords.accuracy;