function renderMapIni(){
	drawVertices(0);
	drawVertices(1);
}

function onMoveEndMapIni(){
	drawVertices(0);
	drawVertices(1);
}


function drawVertices(t){                                                                                                                        
               
      map.clearOverlays();                                                                                                                         
	       
	  var icon_blanco = new GIcon(G_DEFAULT_ICON);
	  if (t==0) {
	  	icon_blanco.image = "/icon/icongrr.png";
		var datum = "WGS84";
		var datumH = "Elip.";
		var a1	= 1;
		var b1	= 0.0;
		var a2	= 0.0;
		var b2	= 1;
		var a0	= 0.0;
		var b0	= 0.0;
	  } else {
		icon_blanco.image = "/icon/iconwv.png";
		var datum = "ED50";
		var datumH = "Orto.";
		var a1	= 1.0000274318;
		var b1	= -0.0000034007;
		var a2	= 0.0000029349;
		var b2	= 1.0000260569;
		var a0	= -0.0022637782;
		var b0	= -0.0010544432;
	

	  }
	  
	  // Read the data from data.xml                                                                                                                 
      var request = GXmlHttp.create();                                                                                                             
	  var center = map.getCenterLatLng();                                                                                                                                         
	  var url = "http://gmaps.cartesia.org/ws_vertices.php?lat="+center.y+"&lon="+center.x+"&t="+t                                                                      
      request.open("GET", url, true);                                                                                                               
                                                                                                                                                   
	  request.onreadystatechange = function() {                                                                                                      
                                                                                                                                                   
	  if (request.readyState == 4) {                                                                                                                 
	  	  var xmlDoc = request.responseXML;                                                                                                          
		  //alert(request.responseText);                                                                                                               
		  var markers = xmlDoc.documentElement.getElementsByTagName("vertice");                                                                        
                                                                                                                                                   
          for (var i = 0; i < markers.length; i++) {                                                                                               
		  		                                                                                         
				var Numero = markers[i].getAttribute("id"); 
				var Nombre = markers[i].getAttribute("n");
				
				var Lat = markers[i].getElementsByTagName("lat");                                                                                        
				var Lng = markers[i].getElementsByTagName("lon"); 				
				var x_utm = markers[i].getElementsByTagName("x"); 
				var y_utm = markers[i].getElementsByTagName("y"); 
				var altura = markers[i].getElementsByTagName("alt"); 
				var huso = markers[i].getElementsByTagName("hu");
				var hoja = markers[i].getElementsByTagName("hoja");
                                                                                                                                                   
				Lat = Lat[0].firstChild.nodeValue;                                                                                                         
				Lng = Lng[0].firstChild.nodeValue; 
				x_utm = x_utm[0].firstChild.nodeValue;
				y_utm = y_utm[0].firstChild.nodeValue;
				altura = altura[0].firstChild.nodeValue;
				huso = huso[0].firstChild.nodeValue;
				hoja = hoja[0].firstChild.nodeValue;

				Url = "http://www.ign.es/ign/home/geodesia/serdag/VerticeResena.jsp?vertice="+Numero+"&usuario=adm&contra=adm";
				Enlace = "javascript:void(window.open('"+Url+"','vertexMap','toolbar=no,location=no,status=no,menubar=no,scrollbars=yes,resizable=no,left=10,top=10,width=650,height=700'))";
				                                                                                                                                           
  				//Cambio grosero de datum ed50-wgs84
				
					Lat_pos = a0 + parseFloat(Lat)*a1 + a2*parseFloat(Lng);
					Lng_pos = b0 + parseFloat(Lat)*b1 + b2*parseFloat(Lng);
				
				var point = new GPoint(parseFloat(Lng_pos), parseFloat(Lat_pos));                                                                                

				var html  = "<table width=\"250\" border=\"1\" class=\"style1\">";
  				 html += "<tr><td colspan=\"3\"><b>" + Nombre + " - " + Numero +"- HMTN:"+ hoja +"</b></td></tr>";
  				 html += "<tr><td>Lon/Lat-"+datum+"</td><td>"+Lng+"</td><td>"+Lat+"</td></tr>";
  				 html += "<tr><td>X/Y UTM-"+huso+"</td><td>"+x_utm+"</td><td>"+y_utm+"</td></tr>";
				 html += "<tr><td>Alt</td><td>"+altura+"</td><td>"+datumH+"</td></tr>";
				 html += "</table>";
				 html += "<a href=\""+Enlace+"\" >Reseņa IGN</a>";
				
				//var j = i + 1;
				//icon.image = "/icon/iconb"+j+".png";
				var marker = createMarker(point, html, icon_blanco);                                                                                                  
				                                                                                                                                           
  				map.addOverlay(marker);                                                                                                                  
          }                                                                                                                                        
        }                                                                                                                                          
      }                                                                                                                                            
      request.send(null);                                                                                                                          
}