function getAjaxReq()
{
	var req;

	if(window.XMLHttpRequest)
	{
		req = new XMLHttpRequest();
	}
	else
	{
		req = new ActiveXObject('Microsoft.XMLHTTP');
	}
	
	return req;
}

function loadWeather()
{
	var req = getAjaxReq();
	var url = 'http://plazahotel.com.mx/wp-content/themes/hotelplaza-v1/clima.php';
	
	req.onreadystatechange = function()
	{
		if(req.readyState ==4 && req.status == 200)
		{
			document.getElementById('clima_header').innerHTML = req.responseText;
		}
	}
	req.open("GET",url,true);
	req.send();
}