function nuevoAjax()
{ 
	var xmlhttp=false; 
	try 
	{ 
		xmlhttp=new ActiveXObject("Msxml2.XMLHTTP"); 
	}
	catch(e)
	{ 
		try
		{ 
			xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); 
		} 
		catch(E) { xmlhttp=false; }
	}
	if (!xmlhttp && typeof XMLHttpRequest!='undefined') { xmlhttp=new XMLHttpRequest(); } 

	return xmlhttp; 
}
var identificador = '';
function trerCalendario(identifica,e)
{
	identificador = identifica;
	document.getElementById("calendario").style.visibility="visible";
	var capa=document.getElementById('calendario');
			capa.style.left = (x-10)+"px";
			capa.style.top = (y-150)+"px";
	var ajax=nuevoAjax();
	capa.innerHTML="Cargando...";
	ajax.open("POST", "texto/control/cal_pross.php", true);
	ajax.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
	ajax.send("");

	ajax.onreadystatechange=function()
	{
		if (ajax.readyState==4)
		{
			capa.innerHTML=ajax.responseText;
		}
	}
	return identificador;
}
function tratarFecha(dia,mes,ano){
	document.getElementById(identificador).value=ano+'-'+mes+'-'+dia;
	document.getElementById("calendario").style.visibility="hidden";
}
function press_calendario(){
	document.getElementById("calendario").style.visibility="visible";
}
function trerCalendarioMes(dia,mes,ano)
{
	document.getElementById("calendario").style.visibility="visible";
	var capa=document.getElementById('calendario');
	var ajax=nuevoAjax();
	capa.innerHTML="Cargando...";
	ajax.open("POST", "texto/control/cal_pross.php", true);
	ajax.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
	ajax.send("dia="+dia+"&mes="+mes+"&ano="+ano+"&mess=");

	ajax.onreadystatechange=function()
	{
		if (ajax.readyState==4)
		{
			capa.innerHTML=ajax.responseText;
		}
	}
}