// JavaScript Document
function nuevoAjax(url, params, method) {
	req = false;
    // branch for native XMLHttpRequest object
    if(window.XMLHttpRequest) {
    	try {
			req = new XMLHttpRequest();
        } catch(e) {
			req = false;
        }
    // branch for IE/Windows ActiveX version
    } else if(window.ActiveXObject) {
       	try {
        	req = new ActiveXObject("Msxml2.XMLHTTP");
      	} catch(e) {
        	try {
          		req = new ActiveXObject("Microsoft.XMLHTTP");
        	} catch(e) {
          		req = false;
        	}
		}
    }
	if(req) {
//		req.onreadystatechange = processReqChange;
		if( method == "POST" ) {
			ajax.open( "POST", file, true);
			req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
			req.send( params );
		} else {
			if( params ) url = url+"?"+params;
			req.open("GET", url, true);
			req.send("");
		}
	}
}