html - Google Maps API Example not working, giving me blank screen -

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the google maps api tutorial (https://developers.google.com/maps/tutorials/fundamentals/adding-a-google-map) giving me blank screen. have been working on 3 hours , cannot figure out.

i copied/pasted code exactly, saved .html file. 

<!doctype html> <html>   <head>     <style>       #map_canvas{         height: 500px;         width: 400px;       }     </style>     <script src="http://maps.googleapis.com/maps/api/js?sensor=false"></script>     <script>       function initialize() {         var map_canvas = document.getelementbyid('map_canvas');         var map_options = {           center: new google.maps.latlng(44.5403, -78.5463),           zoom: 8,           maptypeid: google.maps.maptypeid.roadmap         }         var map = new google.maps.map(map_canvas, map_options)       }        google.maps.event.adddomlistener(window, ‘load’, initialize);     </script>   </head>    <body>     <div id="map_canvas"></div>   </body> </html>

you have illegal characters in code:

timestamp: 08/12/2013 02:08:39 pm error: illegal character line: 21, column: 48 source code:    google.maps.event.adddomlistener(window, $(b!f(bload$(b!g(b, initialize);

change:

 google.maps.event.adddomlistener(window, ‘load’, initialize);

to:

 google.maps.event.adddomlistener(window, "load", initialize);

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