function trim(str){
return str.replace(/^\s\s*/, '').replace(/\s\s*$/, '');}
function totalEncode(str){
var s=escape(trim(str));
s=s.replace(/\+/g,"+");
s=s.replace(/@/g,"@");
s=s.replace(/\//g,"/");
s=s.replace(/\*/g,"*");
return(s);
}

function connect(url,params)
{
var connection;  // The variable that makes Ajax possible!
try{// Opera 8.0+, Firefox, Safari
connection = new XMLHttpRequest();}
catch (e){// Internet Explorer Browsers
try{
connection = new ActiveXObject("Msxml2.XMLHTTP");}
catch (e){
try{
connection = new ActiveXObject("Microsoft.XMLHTTP");}
catch (e){// Something went wrong
return false;}}}
connection.open("POST", url, true);
connection.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
connection.setRequestHeader("Content-length", params.length);
connection.setRequestHeader("connection", "close");
connection.send(params);
return(connection);
}

function validateForm(frm){
var errors='';
var str=trim(frm.s.value);
if (str.length==0){
errors+='post name must be within 20 characters.\n'; }

if (errors){
alert('The following error(s) occurred:\n'+errors);
return false; }
return true;
}

function submitForm(frm){
if(validateForm(frm)){
var url = "formdata.php";
var params = "s=" + totalEncode(frm.s.value);
var connection=connect(url,params);

connection.onreadystatechange = function(){
if(connection.readyState == 4){document.getElementById('nieuwsbr').innerHTML=connection.responseText;}
if((connection.readyState == 2)||(connection.readyState == 3)){document.getElementById('nieuwsbr').innerHTML = '<span style="color:green;">Sending request....</span>';}}
}
}