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Javascript Google Api

Posted on 2011-09-06
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Last Modified: 2012-05-12
<script type="text/javascript">
    function initialize(from, to) {
        if (GBrowserIsCompatible()) {
            map = new GMap2(document.getElementById("map_canvas"));
            gdir = new GDirections(map, document.getElementById("directions"));
            GEvent.addListener(gdir, "load", onGDirectionsLoad);
            GEvent.addListener(gdir, "error", handleErrors);
            setDirections(from, to, "en_US");
        }
    }
    function setDirections(fromAddress, toAddress, locale) {
        gdir.load("from: " + fromAddress + " to: " + toAddress,
	{ "locale": locale });
    }


    function handleErrors() {
        if (gdir.getStatus().code == G_GEO_UNKNOWN_ADDRESS)
            alert("Error code: " + gdir.getStatus().code);
        else if (gdir.getStatus().code == G_GEO_SERVER_ERROR)
            alert("Error code: " + gdir.getStatus().code);
        else if (gdir.getStatus().code == G_GEO_MISSING_QUERY)
            alert("Error code: " + gdir.getStatus().code);
        else if (gdir.getStatus().code == G_GEO_BAD_KEY)
            alert("Error code: " + gdir.getStatus().code);
        else if (gdir.getStatus().code == G_GEO_BAD_REQUEST)
            alert("A directions request could not be successfully parsed.\n Error code: " + gdir.getStatus().code);
        else alert("An unknown error occurred.");

    }
    function onGDirectionsLoad() { }
</script>

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googlemap.pdf
I have attached codes that is working for from/to address route shown on Google Map but missing the zoom in/out feature.

In the javascript, can you tell me how to add in the existing javascript codes? The one (left/top corner).

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Question by:Webboy2008
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