function createRequestObject() {
    var ro;
    var browser = navigator.appName;
    if(browser == "Microsoft Internet Explorer"){
        ro = new ActiveXObject("Microsoft.XMLHTTP");
    }else{
        ro = new XMLHttpRequest();
    }
    return ro;
}

var http = createRequestObject();

function sendReq(serverFileName,action) {
    http.open('get', serverFileName+'?action='+action);
    //http.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded; charset=ISO-8859-2');
    http.onreadystatechange = handleResponse;
    http.send(null);
}


function sendReqA(serverFileName, variableNames, variableValues) {

    var paramString = '';

	variableNames = variableNames.split(',');
	variableValues = variableValues.split(',');

	for(i=0; i<variableNames.length; i++) {
		paramString += variableNames[i]+'='+variableValues[i]+'&';
	}
	paramString = paramString.substring(0, (paramString.length-1));

	if (paramString.length == 0) {
	   	http.open('get', serverFileName);
	}
	else {
		http.open('get', serverFileName+'?'+paramString);
	}
    //http.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded; charset=ISO-8859-2');
    http.onreadystatechange = handleResponse;
    http.send(null);
}


function sendReqForm(serverFileName, obj) {

    var paramString = '';
    var variableNames = obj.name;
	var variableValues = obj.value;


	paramString += variableNames+'='+variableValues+'&';
	paramString = paramString.substring(0, (paramString.length-1));

	if (paramString.length == 0) {
	   	http.open('get', serverFileName);
	}
	else {
		http.open('get', serverFileName+'?'+paramString);
	}
    http.onreadystatechange = handleResponse;
    http.send(null);
}

function handleResponse() {
    if(http.readyState == 4){
        var response = http.responseText;
        var update = new Array();

        if(response.indexOf('|' != -1)) {
            update = response.split('|');
            document.getElementById(update[0]).innerHTML = update[1];
        }
    }
}