Frontiersoft.net Bare-Bone-PHP: Code: HTML Client Ajax :PHP "Oracle 11g

<!DOCTYPE html>
<html>
<head>
<title> Query Oracle Emp table with Ajax</title>
<script type="text/javascript">
//example of respons text
function queryOracleDB()
{
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for older browsers like IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
document.getElementById("div1").innerHTML=xmlhttp.responseText;
}
}
xmlhttp.open("GET","Oracle_server_3.php",true);
xmlhttp.send();
}
</script>
</head>
<body>

<h3>Query Oracle DB , Table emp, <br/>
using Ajax: XMLHttpRequest object: GUI NetBeans IDE 7.1</h3>
<form id="myform1" >
<button type="button" onclick="queryOracleDB()">Load Server Page</button>
<div id="div1">This is a place holder: will be replaced with
<br/> the contents of the server page </div>
</form>

</body>
</html>