function GetXmlHttpObject2()
{
	var xmlHttp=null;
	try
	{
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer
		try
		{
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	return xmlHttp;
}

function populate_cidades(obj, estado)
{
	var combo = document.getElementById(obj);

	if(estado == '')
	{
		combo.length = 0;
		combo.disabled = true;
		combo.length = 1;
		combo.options[0].value = '';
		combo.options[0].text = 'Selecione o Estado';
	}
	else
	{
		combo.disabled = true;
		combo.length = 0;
		combo.length = 1;
		combo.options[0].value = '';
		combo.options[0].text = ' --- Carregando --- ';

		var xmlHttp=GetXmlHttpObject2();
		if (xmlHttp==null)
			return;
		xmlHttp.onreadystatechange=function()
		{
			if(xmlHttp.readyState==4)
			{
				var XML = xmlHttp.responseXML.documentElement.getElementsByTagName('cidade');

				combo.length = 0;
				combo.length = XML.length;
				for(i=0; i<XML.length; i++)
				{
					combo.options[i].value = XML[i].getAttribute("nome");
					combo.options[i].text = XML[i].getAttribute("nome");
				}
				combo.disabled = false;
			}
		}
		url = '/midiaportal/xml/promocaoturbonet/' + estado + '.xml';
		xmlHttp.open("GET", url, true);
		xmlHttp.send(null);
	}
}