function resize() {
        var scrollTop = $(window).scrollTop();
        var ratio = 100-(scrollTop/3);
        if (ratio<31.25) {
            ratio = 31.25;
            $('div#header img').hide();
        }
        else {
            $('div#header img').show();
        }
        $('div#header').css('font-size', ratio+'%');
}

function map() {
    var latitude = $('#lat').html()*1;
    var longitude = $('#long').html()*1;
    var accuracy = $('#acc').html()*1;
    var latlng = new google.maps.LatLng(latitude, longitude);
    var myOptions = {
      zoom: 15,
      center: latlng,
      panControl: false,
      zoomControl: true,
      mapTypeControl: false,
      scaleControl: false,
      streetViewControl: false,
      overviewMapControl: false,
      mapTypeId: google.maps.MapTypeId.ROADMAP
    };
    var map = new google.maps.Map(document.getElementById("mapa"),
        myOptions);
    var circle = new google.maps.Circle({
        map: map,
        center: latlng,
        radius: accuracy,
        strokeColor: '#92B700',
        strokeOpacity: 0.3,
        fillColor: '#92B700',
        fillOpacity: 0.2,
    });
    //circle.bindTo('center', marker, 'position');

}

$(document).ready(function(){

    resize();
    if ($('#lat').length>0 && $('#long').length>0){
        map();
    }
    $(window).scroll(function(){
       resize();
    });

});