Question

I am not seeing any reason why the zoom controls are not showing up as the controls are not disabled in my option? this is v3 google map..has anyone faced similar issue? I can zoom in and out using mouse scroll button or touchpad scroll of laptop..but the icons +/- would be great!

var geocoder;
  var map;

  function initialize() {
    geocoder = new google.maps.Geocoder();
    var latlng = new google.maps.LatLng(42.095287, -79.3185139);
    var myOptions = {
        maxZoom: 12,
      //zoom: 9,
      //center: latlng,
      mapTypeId: google.maps.MapTypeId.ROADMAP,
    };
    map = new google.maps.Map(document.getElementById("map_canvas"),
        myOptions);
   }

Answer 1

You have to use zoom and also center properties to display your map correctly, here is a jsfiddle of a map constructed with your options.
http://jsfiddle.net/5ytkx/9/

Remove the comments before zoom and center properties

 zoom: 9,
 center: latlng,