function ajaxFunction() {
	var xmlHttp;
	try {
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
		return xmlHttp;
	} catch (e) {
		// Internet Explorer
		try {
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
			return xmlHttp;
		} catch (e) {
			try {
				xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
				return xmlHttp;
			} catch (e) {
				alert("Tu navegador no soporta AJAX!");
				return false;
			}
		}
	}
}
function Enviar(_pagina,capa,cerrar) {
	var ajax;
	ajax = ajaxFunction();
	ajax.open("GET", _pagina, true);
	ajax.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded; charset=ISO-8859-1'); 
	ajax.onreadystatechange = function(){
		if (ajax.readyState==1){
			document.getElementById(capa).innerHTML = "<center><img src='img/loading.gif'>&nbsp;<span class='loading'>Aguarde por favor...</span></center>";
		}
		if (ajax.readyState == 4){
			if (ajax.status==200){
				document.getElementById(capa).innerHTML = ajax.responseText;
				document.getElementById(cerrar).innerHTML = "<a class=\"closeX\" onclick=\"minimizar('"+capa+"','"+cerrar+"')\" style=\"cursor:pointer;\">Cerrar Info [X]</a>";
			}else{
				alert(ajax.status)
			}
		}
	}
	ajax.send(null);
}
function enviarMail(){
	c = document.getElementById("resultado_mensaje");
	//variable=documenet.nombre_del_form.nombre_del_control.value
	emis=document.enviar_email.emisor.value;
	dest=document.enviar_email.email_destino.value;
	men=document.enviar_email.mensaje.value;
	ajax=ajaxFunction();
	c.innerHTML = '<p style="text-align:center;">Enviando</p>'; 
	ajax.open("POST", "mail.php",true);
	ajax.onreadystatechange=function() {
		if (ajax.readyState==4) {
			c.innerHTML = ajax.responseText
		}
		borrarCampos()
	}
    ajax.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
	//ajax.send(null);
    ajax.send("destinatario="+dest+"&emisor="+emis+"&mensaje="+men)
}
function borrarCampos(){
       document.enviar_email.emisor.value="";
       document.enviar_email.email_destino.value="";
       document.enviar_email.mensaje.value="";
       document.enviar_email.email_destino.focus();
}
// JavaScript Document