$(function(){
    var opt = {
        center: new google.maps.LatLng(37.482849,140.387859),
        zoom: 9,
        mapTypeId: google.maps.MapTypeId.ROADMAP
    };
    var map = new google.maps.Map($('#googlemap').get(0), opt);
    var infowindow = new google.maps.InfoWindow({maxWidth:300});    
    (function(){
        $(':hidden[name=latlng]').each(function(index){
            if (!this.value) return;
            var latlng = this.value.split(',');
            var marker = new google.maps.Marker({
                map: map,
                position: new google.maps.LatLng(latlng[0], latlng[1])
            });
            var content = $($('div.infowindow').get(index)).html();
            google.maps.event.addListener(marker, 'click', function() {
                infowindow.setContent(content);
                infowindow.open(map, marker);  
            });
        });
    })();
    
});