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var map;
var marker;
var watchID;
$(document).ready(function() {
document .addEventListener ("deviceready", onDeviceReady , false);
// uncomment for testing in Chrome browser
// onDeviceReady ();
});
function onDeviceReady() {
$(window) .unbind();
$(window) .bind('pageshow resize orientationchange', function(e) {
max_height ();
});
max_height ();
google.load("maps", "3.8", {"callback": map, other _ params: "sensor= true&language= en"});
}
function max_height() {
var h = $('div[data-role="header"]').outerHeight(true);
var f = $('div[data-role= "footer"] '). outerHeight (true);
var w = $(window).height();
var c = $('div[data-role="content"]');
var c_h = c.height();
var c_oh = c.outerHeight(true);
var c_new = w - h - f - c_oh + c_h;
var total = h + f + c_oh;
if (c_h < c.get(0).scrollHeight) {
c .height (c.get (0).scrollHeight);
} else {
c.height(c_new);
}
}
function map() {
var latlng = new google.maps.LatLng(50.08, 14.42 );
var myOptions = {
zoom: 15,
center: latlng,
streetViewControl: true,
mapTypeId: google.maps.MapTypeId.ROADMAP,
zoomControl : true
};
map = new google.maps.Map (document. get ElementById ("map"), myOptions);
google. maps.event.addListenerOnce (map, ' tilesloaded ', function () {
watchID = navigator. geolocation. watchPosition (gotPosition , null , {maximumAge: 5000, timeout: 60000, enableHighAccuracy: true});
});
}
// Method to open the About dialog
function showAbout() {
showAlert ("Google Maps", "Created with NetBeans 7.4");
}
;
function showAlert (message, title) {
if (window.navigator .notification) {
window. navigator.notification .alert(message, null , title, 'OK');
} else {
alert (title ? (title + ": " + message) : message );
}
}
function gotPosition (position) {
map.setCenter(new google .maps.LatLng (position.coords .latitude, position. coords. longitude ));
var point = new google. maps.LatLng (position.coords .latitude, position.coords .longitude );
if (!marker) {
//create marker
marker = new google.maps.Marker({
position : point,
map: map
});
} else {
// move marker to new position
marker. setPosition (point);
}
}

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3.ͨ¹ýµ¥»÷ gotPosition ·½·¨µÄÒÔÏÂÐÐÖеÄ×óÅÔ×¢£¬·ÅÖöϵ㡣

var point = new google .maps.LatLng (position .coords.latitude, position .coords. longitude );

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