function initialize() {
    var gkk_bremen = new google.maps.LatLng(53.08491, 8.789019);
    var gkk_frankfurt = new google.maps.LatLng(50.113823, 8.719373);
    var gkk_muenchen = new google.maps.LatLng(48.183037, 11.58494);
    var gkk_hannover = new google.maps.LatLng(52.421164, 9.82657);
    var intime_fulfillment = new google.maps.LatLng(50.113823, 8.719373);

    var options_gkk_bremen = {
        zoom: 15,
        center: gkk_bremen,
        mapTypeId: google.maps.MapTypeId.ROADMAP,
        mapTypeControl: false
    }
    var options_gkk_frankfurt = {
        zoom: 15,
        center: gkk_frankfurt,
        mapTypeId: google.maps.MapTypeId.ROADMAP,
        mapTypeControl: false
    }
    var options_gkk_muenchen = {
        zoom: 15,
        center: gkk_muenchen,
        mapTypeId: google.maps.MapTypeId.ROADMAP,
        mapTypeControl: false
    }
    var options_gkk_hannover = {
        zoom: 15,
        center: gkk_hannover,
        mapTypeId: google.maps.MapTypeId.ROADMAP,
        mapTypeControl: false
    }
    var options_intime_fulfillment = {
        zoom: 15,
        center: intime_fulfillment,
        mapTypeId: google.maps.MapTypeId.ROADMAP,
        mapTypeControl: false
    }

    map_gkk_bremen = new google.maps.Map(document.getElementById("gkk_bremen"), options_gkk_bremen);
    map_gkk_frankfurt = new google.maps.Map(document.getElementById("gkk_frankfurt"), options_gkk_frankfurt);
    map_gkk_muenchen = new google.maps.Map(document.getElementById("gkk_muenchen"), options_gkk_muenchen);
    map_gkk_hannover = new google.maps.Map(document.getElementById("gkk_hannover"), options_gkk_hannover);
    map_intime_fulfillment = new google.maps.Map(document.getElementById("intime_fulfillment"), options_intime_fulfillment);

    var marker_gkk_bremen = new google.maps.Marker({
        position: gkk_bremen,
        map: map_gkk_bremen,
        title:"gkk Bremen GmbH"
    });
    var marker_gkk_frankfurt = new google.maps.Marker({
        position: gkk_frankfurt,
        map: map_gkk_frankfurt,
        title:"gkk Frankfurt GmbH"
    });
    var marker_gkk_muenchen = new google.maps.Marker({
        position: gkk_muenchen,
        map: map_gkk_muenchen,
        title:"gkk München GmbH"
    });
    var marker_gkk_hannover = new google.maps.Marker({
        position: gkk_hannover,
        map: map_gkk_hannover,
        title:"gkk Hannover GmbH"
    });
    var marker_intime_fulfillment = new google.maps.Marker({
        position: intime_fulfillment,
        map: map_intime_fulfillment,
        title:"INTIME Fulfillment & Services GmbH"
    });

    var heute = new Date();
    var times = heute.getTime();
    for(var i=0; i<14; i++) {
        var objOption = document.createElement("option");
        heute.setTime(times + i*86400000);
        objOption.value = heute.getDate() + "." + (heute.getMonth() + 1) + "." + heute.getFullYear();
        objOption.text = heute.getDate() + "." + (heute.getMonth() + 1) + "." + heute.getFullYear();
        document.getElementById("call_Date").add(objOption, null);
    }

    for(var j=9; j<22; j++) {
        var opt = document.createElement("option");
        opt.value = j +":00";
        opt.text = j +":00 Uhr";
        document.getElementById("call_at").add(opt, null);
    }
}