Develop Reference

What do display custom icon for google map Marker?

currentPosition = new google.maps.LatLng(location.coords.latitude, location.coords.longitude);
var mapOptions = {
center: currentPosition,
zoom: 15,
mapTypeId: google.maps.MapTypeId.ROADMAP,
};
map = new google.maps.Map(document.getElementById("map-canvas"), mapOptions)
var home_marker = new google.maps.Marker({
position: currentPosition,
map: map,
icon: "../images/02_button_add.png"
});
Above is my code for google map API and trying to display a custom icon on map.
However, when I delete the icon file from folder. The map still show my icon.
Anyone knows what happen?

If you need to display another icon from same folder, you just change file name and hard reload your browser.
If you wish to display default google marker then remove icon property of marker from your code and hard reload your browser

New Google Maps Marker

Anyone know the URL to this icon, and if you can change the color on the most recent version of Google Maps API ?
I'd like a blue/green icon like below!
EDIT -----------------------------------------
I've found the markers here:
Markers With Text
scale = 2
text = AB
psize = 16
Green Marker
Red Marker
Google Development: Markers

You can custom everything with the API of google map.
To have a different pointer, you must add a specific code and give him the link to the icon you want to assign, and its position.
Something like this for exemple:
var iconBase = 'https://maps.google.com/mapfiles/kml/shapes/';
var marker = new google.maps.Marker({
position: myLatLng,
map: map,
icon: iconBase + 'schools_maps.png'
});
Link to the documentation: https://developers.google.com/maps/tutorials/customizing/custom-markers
I hope it will be able to help you :)

how to update position of google marker

Hi all I need to update google markers position every 5sec
I have this javascript code for drawing a google markers when page loads.
I want to be able to change position of the markers every 5 sec.
Here is my code:
function initialize() {
var myOptions = {
zoom: 4,
center: new google.maps.LatLng(-25.363882, 131.044922),
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById('map_canvas'),
myOptions);
var image = new google.maps.MarkerImage("images/truck3.png",
new google.maps.Size(32.0, 37.0),
new google.maps.Point(0, 0),
new google.maps.Point(16.0, 18.0)
);
var shadow = new google.maps.MarkerImage("images/shadow-truck3.png",
new google.maps.Size(51.0, 37.0),
new google.maps.Point(0, 0),
new google.maps.Point(16.0, 18.0)
);
var marker = new google.maps.Marker({
position: map.getCenter(),
map: map,
icon: image,
shadow: shadow,
title: 'Click to zoom'
});
google.maps.event.addDomListener(window, 'load', initialize);
One more thing how can I put multiple points when showing more then one marker.
I know this is probably trivial for you but I am totally new at this.
EDIT:
I am sorry but this google got me tottaly confused. So What I want to do is next. When page loads I want to retrieve and array of last positions and each of that positions will have their id so an php array would be like array[Lat][Lng][id], after that I would like to put and marker on each of that position and put it in the center of the screen. When user clicks on one marker it will automatically zoom and start putting the marker position in the center every second. And I need an id for that certain marker.
This is a similar question, it would be nice if some java guru can combine me those to to get what I need
LINK ON THE SIMILAR QUESTION

well you can get lot of support for your queries GOOGLE MAPS API V3 Documentation
there are functions like
setCenter(latlng) that changes center on run time and also the function setPosition(latlng:LatLng) to change the center of marker by this way you can change the position of your marker runtime. and for storing last locations you can use a database for it and update it as according to your requirement.

This google.maps.Marker method allows you to change the position of existing markers:
visit here setPosition(latlng:LatLng)
Create an array of the markers, loop through it updating their position.

Add this javascript function to your code ,
$(function () {
setTimeout(function () { $('#map_canvas').load(initialize); }, 50000);
})

Google Maps API: Detecting location and dropping a marker

Using Google's example code for detecting a user's location, I setup a basic page that detects a user's location on a map. I also setup a separate page that drops a marker on a map at a specific coordinate. I want to combine these functions into one script. That is, I want to drop a marker on the map at the location detected, but I can't seem to get it to work. My code detects the user's location, but doesn't drop a marker. I'm sure it's something simple, but I'm not familiar with Javascript, so I'm having trouble resolving the problem.
Below is Google's example code. What would I need to add to display the marker at initialLocation? I tried adding the following code:
var marker = new google.maps.Marker({
position: initialLocation,
map: map,
title: "You are here"
});

Try calling setMap() after you've created the marker:
var marker = new google.maps.Marker({
position: initialLocation,
map: map,
title: "You are here"
});
marker.setMap(map);

IE6: Doesn't load Google Maps API v3

I'm using the new Google Maps API v3.
It works great with Firefox/Chromo/Safari but the map doesn't load in IE6.
Any ideas why the page loads my map in all browsers except IE6?

Just replace this code
var marker = new google.maps.Marker({
position: point,
map: map,
icon: image,
});
to this
var marker = new google.maps.Marker({
position: point,
map: map,
icon: image
});
(line 509)