<!--
function creajax(){
	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;
}


function procAjaxPost(pstrUrl, pidContent, pstrValores, pstrRutaImg){
	// Nota: pstrValores es de la forma : campo1=valor1&campo2=valor2
	var objAjax;
	var objContenedor;
	var dblAlea;
	var strImg;
	if (pstrRutaImg!=""){ strImg = "<img border='0' src='"+pstrRutaImg+"' />"; }
	else { strImg=""; }
	objAjax = creajax();
	objContenedor = document.getElementById(pidContent);
	dblAlea = Math.random();
	objAjax.open("POST",pstrUrl,true);
	objAjax.onreadystatechange = function(){
		if(objAjax.readyState == 1)
			objContenedor.innerHTML = "<center>Procesando "+strImg+"</center>";
		if(objAjax.readyState == 4){		
			objContenedor.innerHTML = objAjax.responseText;	
		}
	}
	pstrValores = pstrValores + "&rand="+dblAlea
	objAjax.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
	objAjax.send(pstrValores);		
}



-->