Nearly 2 years ago, I created a custom map with complete control over the contents of the bubble, using the API and some code manipulation. Click on the above link for a demo. I've cleaned up the code for this answer, although to implement you'll need to replace all YOUR__BLANK__HERE text with the appropriate values.
Step 1: Call the gMaps API
<script src="http://maps.google.com/maps?file=api&v=2&key=YOUR_API_KEY_HERE"
type="text/javascript">
</script>
Step 2: In the body of your document, create an element with id "map". Size and position it with CSS. It requires a height and width.
<div id="map" class="content"></div>
Step 3: After the div has been defined in the DOM, it is safe to insert the following script tag:
note: in xhtml, <script> elements are only allowed in the <head> element, so you may have to insert the following into an anonymous function that is then tied to an onload or onready event.
<script type="text/javascript">
//<![CDATA[
// Check to see if this browser can run the Google API
if (GBrowserIsCompatible()) {
var gmarkers = [];
var htmls = [];
var to_htmls = [];
var from_htmls = [];
var i=0;
// A function to create the marker and set up the event window
function createMarker(point,name,html) {
var marker = new GMarker(point);
// The info window version with the "to here" form open
to_htmls[i] = html +
'<br />Start address:<form action="http://maps.google.com/maps" method="get">' +
'<input type="text" SIZE=40 MAXLENGTH=40 name="saddr" id="saddr" value="" /><br>' +
'<INPUT value="Get Directions" TYPE="SUBMIT">' +
'<input type="hidden" name="daddr" value="' + point.lat() + ',' + point.lng() +
// "(" + name + ")" +
'"/>';
// The inactive version of the direction info
html = html + '<br><a href="javascript:tohere('+i+')">Get Directions<'+'/a>';
GEvent.addListener(marker, "click", function() {
marker.openInfoWindowHtml(html);
});
gmarkers[i] = marker;
htmls[i] = html;
i++;
return marker;
}
// functions that open the directions forms
function tohere(i) {
gmarkers[i].openInfoWindowHtml(to_htmls[i]);
}
// Display the map, with some controls and set the initial location
var map = new GMap2(document.getElementById("map"));
map.setCenter(new GLatLng(
YOUR_LATITUDE_HERE,
YOUR_LONGITUDE_HERE
),
YOUR_ZOOM_LEVEL_HERE // a value of 13 worked for me
);
// Set up one marker with an info window
var marker = createMarker(
new GLatLng(
YOUR_LATITUDE_HERE,
YOUR_LONGITUDE_HERE
),
'YOUR_MARKER_NAME_HERE',
'<i>YOUR_HTML_HERE<'+'/i>');
/* repeat the process to add more markers
map.addOverlay(marker);
var marker = createMarker(
new GLatLng(
YOUR_LATITUDE_HERE,
YOUR_LONGITUDE_HERE
),
'YOUR_MARKER_NAME_HERE',
'<i>YOUR_HTML_HERE<'+'/i>');
map.addOverlay(marker);*/
}
// display a warning if the browser was not compatible
else {
alert("Sorry, the Google Maps API is not compatible with this browser");
}
// This Javascript is based on code provided by the
// Blackpool Community Church Javascript Team
// http://www.commchurch.freeserve.co.uk/
// http://www.econym.demon.co.uk/googlemaps/
//]]>
</script>
Using this code, the bubble contains the html you specify in YOUR_HTML_HERE plus a link to Get Directions, which (when clicked) turns into a textbox asking for a starting address. The result of the query, unfortunately, opens in a new browser window (since, at time of original publishing the API did not include directions capabilities)