getting back to this… actually this looks really easy. Google’s code:
<head>
//<![CDATA[
var map = null;
var geocoder = null;
function load() {
if (GBrowserIsCompatible()) {
map = new GMap2(document.getElementById("map"));
map.setCenter(new GLatLng(37.4419, -122.1419), 13);
geocoder = new GClientGeocoder();
}
}
function showAddress(address) {
if (geocoder) {
geocoder.getLatLng(
address,
function(point) {
if (!point) {
alert(address + " not found")
} else {
map.setCenter(point, 13)
var marker = new GMarker(point)
map.addOverlay(marker);
marker.openInfoWindowHtml(address);
}
}
);
}
}
//]]>
</script>
</head>
<body onload="load()" onunload="GUnload()">
<form action="#" onsubmit="showAddress(this.address.value); return false">
<p>
<input type="text" size="60" name="address" value="1600 Amphitheatre Pky, Mountain View, CA" />
<input type="submit" value="Go!" />
</p>
<div id="map" style="width: 500px; height: 300px"></div>
</form>
</body>
modified body section for EE, assuming separate address, city, state, zip custom fields (exp:weblog tags excluded):
<body onload="load()" onunload="GUnload()">
<form action="#" onsubmit="showAddress(this.address.value); return false">
<p>
<input type="hidden" size="60" name="address" value="{streetaddress}, {city}, {state}" />
<input type="submit" value="Go!" />
</p>
<div id="map" style="width: 500px; height: 300px"></div>
</form>
</body>
I’ll work on implementing this later… for now, 4th of July festivities. 
Thoughts?
