form submission to reload div

woodplease · July 11, 2012

hey. i have a webpage with a menu so that when a link is clicked, a div on the same page loads the links content into it. This works fine. The content of the div is a web form, that when submitted, reloads the page to add the content to the database. the problem is that when the form is submitted, the whole page is re-loaded instead of the div. how can i change it so that when the form(in the div) is submitted, the page is only reloaded in the div?

The Menu code:

<script type="text/javascript">
var loadedobjects=""
var rootdomain="http://"+window.location.hostname
function ajaxpage(url, containerid){
var page_request = false
if (window.XMLHttpRequest) // if Mozilla, Safari etc
page_request = new XMLHttpRequest()
else if (window.ActiveXObject){ // if IE
try {
page_request = new ActiveXObject("Msxml2.XMLHTTP")
} 
catch (e){
try{
page_request = new ActiveXObject("Microsoft.XMLHTTP")
}
catch (e){}
}
}
else
return false
page_request.onreadystatechange=function(){
loadpage(page_request, containerid)
}
page_request.open('GET', url, true)
page_request.send(null)
}
function loadpage(page_request, containerid){
if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1))
document.getElementById(containerid).innerHTML=page_request.responseText
}
function loadobjs(){
if (!document.getElementById)
return
for (i=0; i<arguments.length; i++){
var file=arguments[i]
var fileref=""
if (loadedobjects.indexOf(file)==-1){ //Check to see if this object has not already been added to page before proceeding
if (file.indexOf(".js")!=-1){ //If object is a js file
fileref=document.createElement('script')
fileref.setAttribute("type","text/javascript");
fileref.setAttribute("src", file);
}
else if (file.indexOf(".css")!=-1){ //If object is a css file
fileref=document.createElement("link")
fileref.setAttribute("rel", "stylesheet");
fileref.setAttribute("type", "text/css");
fileref.setAttribute("href", file);
}
}
if (fileref!=""){
document.getElementsByTagName("head").item(0).appendChild(fileref)
loadedobjects+=file+" " //Remember this object as being already added to page
}
}
}
</script>
</head>
					<center>
<div id="leftcolumn">
<a href="javascript:ajaxpage('new_cat.php', 'rightcolumn');">New Category</a>
<a href="javascript:ajaxpage('new_album.php', 'rightcolumn');">New Album</a>
<a href="javascript:ajaxpage('new_user.php', 'rightcolumn');">New User</a>
</div>
<div id="rightcolumn"><h3>Choose a page to load.</h3></div>

The form code:

<?php
include "../dbconnect.php";
include "../menu.php";
if (isset ($_POST['cat_name'])){
$cat_name = mysql_real_escape_string($_POST['cat_name']);
}
if (isset ($_POST['cat_desc'])){
$cat_desc = mysql_real_escape_string($_POST['cat_desc']);
}
?>
<head>

<script type="text/javascript" src="../js/jquery-1.3.2.min.js"></script>
</head>


					<center>
					 <?php
					if (isset($_POST['submit'])) { 
					mysql_query ("INSERT INTO category (cat_name, cat_desc) VALUES ('$cat_name', '$cat_desc')");
					?>
					<div id="txtHint">
					<h1>Category added</h1><br /><br /><br /></div>
					<a href='javascript:javascript:history.go(-2)'>BACK</a>
					<?php
					}
					else
					{
					?>
					<div id="stylized" class="login">
							<h1>Create new Category</h1>
						<p>Please enter details for the new Category</p>
					<form id="new_category" method="post" action="new_cat.php">

							<label>Category Name </label><input type="text" name="cat_name" size="50" />
							<label>Description</label><textarea rows="10" cols="40" name="cat_desc"></textarea>
							<button type="submit" name="submit" >Add New Category</button>

					<?php } ?>
					</center>

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form submission to reload div

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