var xmlHttp
var lav


function changeprovincia(idpa)
{

document.getElementById('ciudades').innerHTML=""
document.getElementById('ciudades').style.visibility="hidden"

xmlHttp=GetXmlHttpObject()
if (xmlHttp==null)
{
alert ("Browser does not support HTTP Request")
return
} 
document.getElementById('ciudades').innerHTML="<span class=texto>&nbsp;leyendo ...</span>"
var url="http://www.asnetservicios.com/cgi-bin/ditgestion/hoteles/rooms.exe/ajaxciudadesprovincia"
url=url+"?idpais="+idpa
url=url+"&provincia="+document.getElementById('provincia').value
url=url+"&sid="+Math.random()
xmlHttp.onreadystatechange=stateChangedprovincia
xmlHttp.open("GET",url,true)
xmlHttp.send(null)

} 

function stateChangedprovincia() 
{ 
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
{ 
document.getElementById('ciudades').style.visibility="visible"
document.getElementById('ciudades').innerHTML=xmlHttp.responseText 
} 
} 

function GetXmlHttpObject()
{ 
var objXMLHttp=null
if (window.XMLHttpRequest)
{
objXMLHttp=new XMLHttpRequest()
}
else if (window.ActiveXObject)
{
objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP")
}
return objXMLHttp
}