function initialize() {
  if (GBrowserIsCompatible()) {
    var map = new GMap2(document.getElementById("map_canvas"));
    map.setMapType(G_HYBRID_MAP);
    map.setCenter(new GLatLng("38.48551", "35.15625"), 6);
    map.addControl(new GLargeMapControl());
    map.addControl(new GMapTypeControl());
    map.addControl(new GOverviewMapControl());
    map.enableDoubleClickZoom();
    
    var adPos = new GControlPosition(G_ANCHOR_BOTTOM_LEFT, new GSize(5, 5));
    var publisher_id = 'pub-4338345453692891';
	 
	 var adsManagerOptions = 
	 {
	 maxAdsOnMap : 1,
	 style: 'adunit',
	 channel: '5212566904',
	 position: adPos
	 };

	 adsManager = new GAdsManager(map, publisher_id, adsManagerOptions);
	 adsManager.enable();

  
    function createMarker(latlng, number, image ,size) {
	var MyIcon = new GIcon(G_DEFAULT_ICON);
	MyIcon.shadow = "";
	MyIcon.iconSize = new GSize(size, size);
	MyIcon.image = image;
	MyIcon.iconAnchor = new GPoint((size/2),(size/2));
	//MyIcon.shadowSize = new GSize(37, 34);
	//MyIcon.infoWindowAnchor = new GPoint(10, 10);
	
	markerOptions = { icon:MyIcon };
	var marker = new GMarker(latlng, markerOptions);
	
	marker.value = number;
	GEvent.addListener(marker,"click", function() {
	var myHtml = 	"<b> Yer : <font color='red'>" + yer[number] + "</font></b>" + 
			"<br/><b>Zaman : </b>" + zaman[number] +
			"<br/><b>Şiddet : </b>" + siddet[number] +
			"<br><b> Derinlik : </b>" + derinlik[number] +
			"<br/><b>Koordinat : </b>" + xs[number] +        					 " - " + ys[number] +
			"<br/><b>Sıra : </b>" + (number+1) + " / 200";
	map.openInfoWindow(latlng, myHtml);
	});
	return marker;
	}

    for (var i = 0; i < 200; i++) {
	if (i<20)
	{
		map.addOverlay(createMarker(new GLatLng(xs[i], ys[i]), i ,"icons/nokta100_12_red.png" , 14));
	}
	else
	{
		map.addOverlay(createMarker(new GLatLng(xs[i], ys[i]), i ,"icons/nokta100_12_green.png" , 10));
	}
    }
  }
}