This is portion of my index.html
<script type="text/javascript">
function callPortion()
{
var xmlhttp;
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
document.getElementById("main").innerHTML=xmlhttp.responseText;
}
}
xmlhttp.open("GET","welcome.php",true);
xmlhttp.send();
}
</script>
</head>
<body>
<a href=# shape="rect" onclick="callPortion()">Gallery</a>
<div id ="main"></div>
...
this is my welcome.php page
<?php
<div>
<p> Welcome! </p>
</div>
?>
How do I make it so that when you click on the gallery link, that it opens displays the php page in the "main" div tags?