function app() {
		var req = new XMLHttpRequest();
		var result = document.getElementById("result");
		var direccion = document.getElementById("direccion");
		var geo_options = { 
			enableHighAccuracy: false, 
			maximumAge        : 0, 
			timeout           : 5000
		}

		function doGet(lat,lng){
			var d = new Date();
			var time=d.getHours()*100 + d.getMinutes();
			var params="?lat="+lat+"&long="+lng+"&t="+time;
			req.open("GET", "http://uv.especificosba.com.ar/back/location.php"+params, true);
			req.onreadystatechange=function(){
			if(req.readyState == 4 && req.status == 200)
				var res=JSON.parse(req.responseText);
				if(res==undefined) { return; }
				if(res.errorn==1){
					result.innerHTML=res.error;
				} else {
					result.innerHTML="El indice UV actual en <br/>" +res.provincia + " es " + res.indicet + " ("+ numtolet(res.indicet)  +") <br/>y el m&aacute;ximo esperado para hoy es " + res.indice+ " ("+ numtolet(res.indice)  +")";
				}
				resize();
			}
			req.send();
		}
		function error(e){
			var cargando=document.getElementById("cargando");
			cargando.parentNode.removeChild(cargando);
			initialize();
			resize();
		}
		function numtolet(num){
			if (num<=2) return "Muy bajo";
			if (num<=4) return "Bajo";
			if (num<=6) return "Moderado";
			if (num<=9) return "Alto";
			if (num<=14) return "Muy alto";
			return "Extremo";
		}
		var geocoder = null;
		var markers = new Array();
		
		function autocomplete_cb() {
			direccion = document.getElementById("direccion");
			geocoder = new google.maps.Geocoder();
			var address = direccion.value;
			var callback1 = function(results, status) {
				result.innerHTML="Cargando...";
			    if (status == google.maps.GeocoderStatus.OK) {
			    	   doGet(results[0].geometry.location.lat(),results[0].geometry.location.lng());
				  }
			};
		    geocoder.geocode( { 'address': address}, callback1);
		}
		
		function initialize() {
			var autocomplete = new google.maps.places.Autocomplete(document.getElementById("direccion"));
			google.maps.event.addListener(autocomplete, 'place_changed', function() {
				autocomplete_cb();
			});
				
		}
		error();

}

function resize(){
	var html = document.documentElement;
	var height = Math.max( html.clientHeight, html.offsetHeight );
}
window.addEventListener('load', app, false);
window.addEventListener('resize', resize, false);