I'm still learning javascript so bear with me but I'm having a problem with and onclick function in GMaps. We've got a planning map for customers with a bunch of polygons to demarcate regions. When they click on a polygon I want the map to zoom in on the region but then also remove the polygon so the color/shading doesn't interfere with their view. I can get either one to happen on it's own but can't get both to happen even though I think I have the code in the right order. Any help?

Code:
var map;
var src = 'https://www.huts.org/Tests/Maps/GPSTracks/fullHutSystemEdit5.kml';
	
      function initialize() {
	 
        var map_canvas = document.getElementById('map-canvas');
        var map_options = {
          center: new google.maps.LatLng(39.51174, -106.26735),
          zoom: 9,
          mapTypeId: google.maps.MapTypeId.TERRAIN,
		  mapTypeControlOptions:{
                style: google.maps.MapTypeControlStyle.DROPDOWN_MENU
            },
            navigationControlOptions:{
                style: google.maps.NavigationControlStyle.SMALL
            }
        }
        var map = new google.maps.Map(map_canvas, map_options)
		 loadKmlLayer(src, map);	
		 
		 var poly10th 
		 var polyBraun
		 var polyGrand
		 
		  var TenthCoords = [
			new google.maps.LatLng(39.731481865131, -106.9903564453125),
			new google.maps.LatLng(39.150297710716686, -106.9903564453125),
			new google.maps.LatLng(39.15029771071668, -105.91644287109375),
			new google.maps.LatLng(39.731481865131, -105.91644287109375),
			];
			
		var BraunCoords = [
			new google.maps.LatLng(39.150297710716686, -106.9903564453125),
			new google.maps.LatLng(38.9348437659246, -106.9903564453125),
			new google.maps.LatLng(38.9348437659246, -106.57562255859375),
			new google.maps.LatLng(39.150297710716686, -106.57562255859375),
			];
		var GrandCoords = [
			new google.maps.LatLng(40.06651166669527, -105.91644287109375),
			new google.maps.LatLng(39.731481865131, -105.91644287109375),
			new google.maps.LatLng(39.731481865131, -105.53741455078125),
			new google.maps.LatLng(40.06651166669527, -105.53741455078125),
			];
			
		var systemCoords = [ TenthCoords, BraunCoords, GrandCoords];
		
			 poly10th = new google.maps.Polygon({
				name: "10th Mountain Hut System",
				paths: systemCoords [0],
				strokeColor: '#cccccc',
				strokeOpacity: 0.8,
				strokeWeight: 2,
				fillColor: '#00CED1',
				map:map,
				fillOpacity: 0.25
				});

			polyBraun = new google.maps.Polygon({
				name: "Braun & Friends Hut System",
				paths: systemCoords [1],
				strokeColor: '#cccccc',
				strokeOpacity: 0.8,
				strokeWeight: 2,
				fillColor: '#00CED1',
				map:map,
				fillOpacity: 0.25
				});
				
			polyGrand = new google.maps.Polygon({
				name: "Grand Huts System",
				paths: systemCoords [2],
				strokeColor: '#cccccc',
				strokeOpacity: 0.8,
				strokeWeight: 2,
				fillColor: '#00CED1',
				map:map,
				fillOpacity: 0.25
				});
				
		poly10th.setMap(map);
		polyBraun.setMap(map);
		polyGrand.setMap(map);
		
	var contentString = '<div id="content">'+
      '<div id="siteNotice">'+
      '</div>'+
      '<h5 id="firstHeading" class="firstHeading">10th Mountain Division Hut System</h5>'+
      '</div>';
	var contentStringBraun = '<div id="content">'+
      '<div id="siteNotice">'+
      '</div>'+
      '<h5 id="firstHeading" class="firstHeading">Braun & Friends Hut System</h5>'+
      '</div>';
		var contentStringGrand = '<div id="content">'+
      '<div id="siteNotice">'+
      '</div>'+
      '<h5 id="firstHeading" class="firstHeading">Grand Huts Association</h5>'+
      '</div>';
	  
		var infowindow = new google.maps.InfoWindow({
			content: contentString,
			maxWidth: 250
				});
		var infowindowBraun = new google.maps.InfoWindow({
			content: contentStringBraun,
			maxWidth: 250
				});
		var infowindowGrand = new google.maps.InfoWindow({
			content: contentStringGrand,
			maxWidth: 250
				});
			google.maps.event.addListener(poly10th, "mouseover", function() {
			   var laty = 39.44474
			   var lngy = -106.42499
			infowindow.setPosition(new google.maps.LatLng(laty,lngy));
				infowindow.open(map);
				});
			google.maps.event.addListener(polyBraun, "mouseover", function() {
			   var laty = 39.05705
			   var lngy = -106.79873
			infowindowBraun.setPosition(new google.maps.LatLng(laty,lngy));
				infowindowBraun.open(map);
				});
			google.maps.event.addListener(polyGrand, "mouseover", function() {
			   var laty = 39.88286
			   var lngy = -105.75916
			infowindowGrand.setPosition(new google.maps.LatLng(laty,lngy));
				infowindowGrand.open(map);
				});
			google.maps.event.addListener(poly10th, 'mouseout', function() {
				infowindow.close(map,poly10th);
				});
			google.maps.event.addListener(poly10th, 'click', function() {
			map.setZoom(11);
			map.setCenter(poly10th.getPosition());
			});
			google.maps.event.addListener(poly10th, 'click', function() {
			poly10th.setMap(null);
			});
			google.maps.event.addListener(polyBraun, 'mouseout', function() {
				infowindowBraun.close(map,polyBraun);
				});
			google.maps.event.addListener(polyGrand, 'mouseout', function() {
				infowindowGrand.close(map,polyGrand);
				});
				
			google.maps.event.addListener(poly10th,"mouseover",function(){
				this.setOptions({fillColor: "#00FF00"});
				}); 
			google.maps.event.addListener(poly10th,"mouseout",function(){
				this.setOptions({fillColor: "#00CED1"});
				});
			google.maps.event.addListener(polyBraun,"mouseover",function(){
				this.setOptions({fillColor: "#00FF00"});
				}); 
			google.maps.event.addListener(polyBraun,"mouseout",function(){
				this.setOptions({fillColor: "#00CED1"});
				});
			google.maps.event.addListener(polyGrand,"mouseover",function(){
				this.setOptions({fillColor: "#00FF00"});
				}); 
			google.maps.event.addListener(polyGrand,"mouseout",function(){
				this.setOptions({fillColor: "#00CED1"});
				});
  };
	   

function loadKmlLayer(src, map) {
  var kmlLayer = new google.maps.KmlLayer(src, {
    suppressInfoWindows: false,
    preserveViewport: true,
    map: map
  });
}
      google.maps.event.addDomListener(window, 'load', initialize);