This link lists more than 23 tools that can assist you in your Ajax development.

• The FTP server address
• Username
• Password

Of course you also need an FTP client; and FTP client is nothing but a program that enables you to upload files to a remote server using FTP connection. It’s like sometimes you need a program to read your e-mail or for wordprocessing.

The FTP server address is given by the host company or the person who manages the server. He or she can create an FTP account for you and then give you the needed information. When you decide to host your own domain under commercial server when you create your domain account you automatically get an FTP server address. Most likely your FTP server address would be yourdomain.com. If it is not your domain then the people running the website will either generate an FTP server address for your account or you will need to have them create it for you.

You can use any of the freely available FTP clients. FileZilla comes highly recommended. In case you are using Firefox you also get a plug-in called FireFTP that lets you upload files through an FTP connection. After you have downloaded and installed the FTP client you need to create a new account. When you create an account you will attach a name to that account; enter the FTP server address; enter the username and then the password. When you connect you either go to your user directory where you are supposed to upload your files or you go to the main directory and then from their you go to the directory assigned for your files.

<script type="text/javascript">
var image1=new Image();
image1.src="/imagepath/thisimage.gif";
var image2=new Image();
image2.src="/imagepath/thatimage.gif";
</script>

This way you can preload as many images as you want. But the problem is sometimes your user may have JavaScript turned off in his or her browser. This doesn’t normally happen but it might happen so why take a chance? You can preload images using some CSS definitions in this way you don’t have to use JavaScript. Here is how you can achieve the same effect with some CSS and markup:

<style>
div#loadimages{
    display:none;
}

Then, somewhere on your webpage you can include the following markup:

<div id="loadimages">
<img src="/imagepath/image1.gif" width="1" height="1" />
<img src="/imagepath/image2.gif" width="1" height="1" />
</div>

You can load here as many images as you feel like and they will not show up because the display has been set to none. Now you can use the images using the same path wherever you feel like and they will show up immediately. Your webpage may take longer to load as a whole but you can keep the size of your images to minimum to make sure that not much delay takes place. This way you can preload images using CSS.

<meta HTTP-EQUIV="REFRESH" content="0; url=http://www.yourdomain.com/somepage.html">

where 0 means that the browser should wait for zero seconds before redirecting. You can do this in PHP too by simply using this command:

<?php header("Location: yourpage.php"); ?>

You just need to make sure that the browser has sent no header information before this command otherwise you will encounter an error. This basically means you should have not printed anything using either php or HTML on to the browser.

There are many plugins available for FireFox if you are looking for them as a web developers. These days as a web developers you don’t just build a website you also sort of monitor its success regarding what sort of exposure it is getting on the Internet. This is more important if you work as a freelance because then you have to develop and promote your own website too.

We all know what a great browser FireFox is and for every possibly conceivable task there is a plugin available. There are tons of plugins available for web developers too, for instance this CSS validator plugin lets you validate your CSS and this plugin can tell you how much time it takes your web page to load. Read about the rest of the plugins at 25+ FireFox Extensions for Web Developers.