Ayuda con codigo para insertar un mapa en una web 🗺️ Foro Programación de Google Earth y Maps 🗺️ p93 🗺️

<?php
// ====== Google Map Single page======
Class googlemmap_singlepage extends WP_Widget {
function googlemmap_singlepage() {
//Constructor
$widget_ops = array('classname' => 'widget Google Map in Detail page Sidebar', 'description' => __('Google Map in Detail page Sidebar. It will show you google map V3 for detail page only.') );
$this->WP_Widget('googlemmapwidget_single', __('PT &rarr; Google Map V3 - Detail page'), $widget_ops);
}
function widget($args, $instance) {
// prints the widget
extract($args, EXTR_SKIP);
$title = empty($instance['title']) ? '' : apply_filters('widget_title', $instance['title']);
$advt1 = empty($instance['advt1']) ? '' : apply_filters('widget_advt1', $instance['advt1']);
$link1 = empty($instance['link1']) ? '' : apply_filters('widget_link1', $instance['link1']);
?>

<div class="sidebar_map clearfix">
<?php
Global $post,$wp_query;
$post = $wp_query->post;
If(is_single()){
If(get_post_meta($post->ID,'address',true))
{
$address = get_post_meta($post->ID,'address',true);
}else
{
$address = get_post_meta($post->ID,'geo_address',true);
}
$address_latitude = get_post_meta($post->ID,'geo_latitude',true);
$address_longitude = get_post_meta($post->ID,'geo_longitude',true);
$map_type = get_post_meta($post->ID,'map_view',true);
If($map_type=='G_NORMAL_MAP')
{
$map_type='ROADMAP';
}elseif($map_type=='G_SATELLITE_MAP')
{
$map_type='SATELLITE';
}elseif($map_type=='G_HYBRID_MAP')
{
$map_type='TERRAIN';
}
$scale = 14;
If( $post->post_type=='post')
{
$cagInfo = wp_get_object_terms($post->ID,'category',$args);
}else
{
$cagInfo = wp_get_object_terms($post->ID,'eventcategory',$args);
}

$cat_icon = $cagInfo[count($cagInfo)-1]->term_icon;
If($cat_icon=='')
{
$cat_icon = '';
}
$prdimage = bdw_get_images($post->ID,'thumb',1);

$srch_arr = array("'",'"','\\');
$rpl_arr = array('','','');
$contact = trim(str_replace($srch_arr,$rpl_arr,get_post_meta($post->ID,'contact',true)));
$post_title = trim(str_replace($srch_arr,$rpl_arr,get_the_title($post->ID)));
$address = trim(str_replace($srch_arr,$rpl_arr,$address));

$tooltip_message = '';
$tooltip_message = '<img src="'.$prdimage[0].'" width=90 height=70 style="float:left; margin:0 11px 22px 0;" />';
$tooltip_message .= '<a href="'.get_permalink($post->ID).'" class=ptitle>'.$post_title.'</a>';
If($address){
$tooltip_message .= '<br/><span class=pcontact>'.$address.'</span>';
}
If($contact){
$tooltip_message .= '<br/><span class=pcontact>'.wordwrap($contact,40,'<br/>\n').'</span>';
}
If($address_longitude && $address_latitude)
{
?>
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>
<script type="text/javascript">
Function initialize() {
var mapDiv = document.getElementById('map-canvas');
var latLng = new google.maps.LatLng(<?php echo $address_latitude;?>, <?php echo $address_longitude;?>);
var map = new google.maps.Map(mapDiv, {
center: latLng,
zoom: <?php echo $scale;?>,
<?php if($map_type=='ROADMAP' || $map_type=='SATELLITE'|| $map_type=='TERRAIN'){?>
mapTypeId: google.maps.MapTypeId.<?php echo $map_type;?>,
<?php }else{?>
mapTypeId: google.maps.MapTypeId.ROADMAP,
<?php }?>
});

var image = '<?php echo $cat_icon;?>';
var myLatLng = new google.maps.LatLng(<?php echo $address_latitude;?>, <?php echo $address_longitude;?>);
var Marker = new google.maps.Marker({
position: latLng,
map: map,
icon: image
});

var content = '<?php echo $tooltip_message;?>';
infowindow = new google.maps.InfoWindow({
content: content
});
infowindow.open(map, Marker);
}
Google.maps.event.addDomListener(window, 'load', initialize);
</script>
<div id="map-canvas" style="width:294px; height:370px"></div>
<span style="font:bold 12px Arial, Helvetica, sans-serif; font-weight:bold; float:left; display:block; padding:8px; "><a href="http://maps.google.com/maps?f=d&dirflg=d&saddr=<?php echo $address;?>" target="_blank"><?php _e('Obtener direcciones en el mapa &raquo;');?></a></span>
<?php
}
}
?>
</div>
<?php
}
function update($new_instance, $old_instance) {
//save the widget
$instance = $old_instance;
$instance['title'] = strip_tags($new_instance['title']);
$instance['advt1'] = ($new_instance['advt1']);
$instance['link1'] = ($new_instance['link1']);

return $instance;
}
function form($instance) {
//widgetform in backend
$instance = wp_parse_args( (array) $instance, array( 'title' => '', 'advt1' => '', 'link1' => '') );
$title = strip_tags($instance['title']);
$advt1 = ($instance['advt1']);
$link1 = ($instance['link1']);
}}
Register_widget('googlemmap_singlepage');
?>

$map_type = get_post_meta($post->ID,'GStreetviewPanorama',true);