Google Maps: made changes, now map won't load

I had my Google map running just fine. I've been trying to get only one infowindow to open at once and in the process of doing that, broke my code. I am unable to get it back to a working stage at this point. I've gone through the code a dozen times and can't find anything wrong with it. I was basing my changes on this article on the stackoverflow forums.

<script type="text/javascript">

    function initialize() {
        var infowindow new google.maps.InfoWindow();
        var LatLng = new google.maps.LatLng(38.89, -92.343);
        var myOptions = {开发者_如何学JAVA
            zoom: 13,
            mapTypeId: google.maps.MapTypeId.ROADMAP,
            center: LatLng
        };

        var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);

        var bounds = new google.maps.LatLngBounds();    

        var Image = "images/wrenchIcon.png";
        var Content = "blank";
        var Head = "The Falls";

        var cMarker = new google.maps.Marker({
            position: LatLng,
            map: map,
            title: Head,
            icon: Image
        })

        google.maps.event.addListenter(cMarker, 'click', function() {
            infowindow.setContent(Content);
            infowindow.open(map, cMarker);
        });

            Image = "images/goodIcon.png";

            LatLng = new google.maps.LatLng(38.912, -92.301);
            Content = "blank";
            Head = "Bob TheBuilder";

            var marker1 = new google.maps.Marker({
                position: LatLng,
                map: map,
                title: Head,
                icon: Image
            });

            google.maps.event.addListenter(marker1, 'click', function() {
                infowindow.setContent(Content);
                infowindow.open(map, marker1);
            });     

            bounds.extend(LatLng);

            Image = "images/alertYelIcon.png";

            LatLng = new google.maps.LatLng(38.951, -92.332);
            Content = "blank";
            Head = "Shiloh Bar&Grill";

            var marker2 = new google.maps.Marker({
                position: LatLng,
                map: map,
                title: Head,
                icon: Image
            });

            google.maps.event.addListenter(marker2, 'click', function() {
                infowindow.setContent(Content);
                infowindow.open(map, marker2);
            });     

            bounds.extend(LatLng);

            Image = "images/goodIcon.png";

            LatLng = new google.maps.LatLng(38.92, -92.332);
            Content = "blank";
            Head = "FlatBranch Pub";

            var marker3 = new google.maps.Marker({
                position: LatLng,
                map: map,
                title: Head,
                icon: Image
            });

            google.maps.event.addListenter(marker3, 'click', function() {
                infowindow.setContent(Content);
                infowindow.open(map, marker3);
            });     

            bounds.extend(LatLng);
</script>

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It looks like your initialize function doesn't have a closing } If this isn't the issue when is the function being called, onload?

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It also looks like you're missing a = in the first line of the initialize function.