/*
    xmlhttp.js
    Capacidades basicas para ajax
*/

function getxmlhttp() {
    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 processajax(serverPage, obj, getOrPost, fields) {
    xmlhttp = getxmlhttp();
    if (getOrPost == "get") {
	xmlhttp.open("GET", serverPage);
	xmlhttp.onreadystatechange = function() {
	    if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
		obj.innerHTML = xmlhttp.responseText;
	    }
	}

	xmlhttp.send(null);
    }
    else {
	xmlhttp.open("POST", serverPage+'?'+fields, true);
	xmlhttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded; charset=UTF-8");
	xmlhttp.onreadystatechange = function() {
	    if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
		obj.innerHTML = xmlhttp.responseText;
	    }
	}
	
	xmlhttp.send(fields);
    }
}