Refresh Only the Link not a page or map,Can any one?

Question

 Before this script I pass one link to get the latitude and longitude to track ,I need to refresh the link every 10seconds and code load automatic but not the page & map...

 

<script type="text/javascript">

setInterval(function() {

window.location.reload();

}, 10000);

var src_city1 = document.getElementById("src_city1").value;

var src_city2 = document.getElementById("src_city").value;

var src_city3 = document.getElementById("src_city2").value;

var src_city5 = document.getElementById("src_city5").value;

var map, marker;

var startPos = [src_city1,src_city2];

var speed = 50; // km/h

var delay = 100;

function animateMarker(marker, coords, km_h)

{

var target = 0;

var km_h = km_h || 50;

coords.push([startPos[0], startPos[1]]);

var spherical;

var computeDistanceBetween;

function goToPoint()

{

var lat = marker.position.lat();

var lng = marker.position.lng();

var step = (km_h * 1000 * delay) / 3600000;

var dest = new google.maps.LatLng(

coords[target][0], coords[target][1]);

var distance = google.maps.geometry.spherical.computeDistanceBetween(dest, marker.position);

var numStep = distance / step;

var i = 0;

var deltaLat = (coords[target][0] - lat) / numStep;

var deltaLng = (coords[target][1] - lng) / numStep;

function moveMarker()

{

lat += deltaLat;

lng += deltaLng;

i += step;

if (i < distance)

{

marker.setPosition(new google.maps.LatLng(lat, lng));

setTimeout(moveMarker, delay);

}

else

{ marker.setPosition(dest);

target++;

if (target == coords.length){ target = 0; }

setTimeout(goToPoint, delay);

}}

moveMarker();

}

goToPoint();

}

function initialize(){

var myOptions = {

zoom: 18,

center: new google.maps.LatLng(src_city1,src_city2),

mapTypeId: google.maps.MapTypeId.ROADMAP

};

var markers = [

{

"title": '',"description":'',"description1":'Active',"description2":'Active',"icons": "Markers/direction_icon.png","icon": "Markers/letter_m.png"

}];

map = new google.maps.Map(document.getElementById("dvMap"), myOptions);

var icon = "Markers/letter_m.png";

var infoWindow = new google.maps.InfoWindow();

var data = markers;

var data1 = data.description;

marker = new google.maps.Marker({

position: new google.maps.LatLng(startPos[0], startPos[1]),

map: map,

icon:icon,

// title: data.title,

// icon: data.icon,

//icons: data.icons

});

google.maps.event.addListenerOnce(map, 'idle', function(){

setInterval(marker, [

[src_city1, src_city2]

], 1000);

});

}

initialize();

</script>