/** AjaxConn - Simple XMLHTTP Interface - eliasbg@gmail.com - 17/Feb/2006
** Código Liberado por: Elías Barrientos García
** página: eliasbg.dynalias.com/AJAX/paginacion
** weblog: eliasbg.blogspot.com
**/
function AJAXConn(sDestino, sCargando)
{
var xmlhttp, bCompleto = false;

try {
xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
}
catch (excepcion) {
try {
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
catch (excepcion) {
try {
xmlhttp = new XMLHttpRequest();
}
catch (excepcion) {
xmlhttp = false;
}
}
}
if (!xmlhttp) return null;

this.connect = function(sURL, sMetodo, sVars) {
if (!xmlhttp) return false;
bCompleto = false;
sMetodo = sMetodo.toUpperCase();

try {
if (sMetodo == "GET") {
xmlhttp.open(sMetodo, sURL+"?"+sVars, true);
sVars = "";
}
else {
xmlhttp.open(sMetodo, sURL, true);
xmlhttp.setRequestHeader("Method", "POST "+sURL+" HTTP/1.1");
xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
}

xmlhttp.onreadystatechange = function(){
// Estado del Objeto: //
ST_UNINITIALIZED = 0;
ST_LOADING = 1;
ST_LOADED = 2;
ST_INTERACTIVE = 3;
ST_COMPLETE = 4;

if (xmlhttp.readyState == ST_LOADING) {
document.getElementById(sDestino).innerHTML = sCargando;
}

if (xmlhttp.readyState == ST_COMPLETE && !bCompleto) {
bCompleto = true;
document.getElementById(sDestino).innerHTML = xmlhttp.responseText;
}
};
xmlhttp.send(sVars);
}
catch(excepcion) {
return false;
}
return true;
};
return this;
}