var id = "freeform";
var i = 1;
var width = 230; // 
var height = 250;
var MaxHoriz   = (screen.width-width)/2;
var MaxVert    = (screen.height-height)/2;
var slope = screen.height/screen.width;
var interval;

function Move (horizontal, vertical, speed)
{
var element = document.getElementById(id);
if (element != null)
{
element.style.position = "absolute";
//element.style.left = "1000px";
//element.style.top = "1000px";

interval = setInterval(function(){MoveNow(horizontal,vertical)},speed);
}

}

function MoveNow (horizontal,vertical)
{
var element = document.getElementById(id);
var MoveHoriz = horizontal * i;
var MoveVert = vertical * i;

if (MoveHoriz >= MaxHoriz || MoveVert >= MaxVert) 
{
clearInterval(interval);
return;
}
element.style.left = MoveHoriz + "px";
element.style.top = MoveVert + "px";
i++;
}

function destroy ()
{

var element = document.getElementById(id);
if (element != null)
    element.style.display = "none";
}

function clearFields ()
{
document.getElementById("fname").value = "";
document.getElementById("email").value = "";
document.getElementById("pwd").value = "";
}

function formSend () 
{

var fname = document.getElementById("fname").value;
var email = document.getElementById("email").value;
var pwd = document.getElementById("pwd").value;

if (window.XMLHttpRequest) xmlhttp=new XMLHttpRequest();
else xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");

xmlhttp.onreadystatechange = function() {
if (xmlhttp.readyState==4 && xmlhttp.status==200) 
{
var textResponse = xmlhttp.responseText;
 
if (textResponse.toString().indexOf("Thank")>-1) clearFields();
alert(textResponse);
}

}

xmlhttp.open("GET","free_send.php?fname=" + fname + "&email=" + email + "&pwd=" + pwd,true);
xmlhttp.send();

}