If you're looking for an alternative to using IFRAMEs to load dynamic content after the page has already loaded, you can turn to AJAX. This method allows you to update a specific container on your webpage, providing a more elegant and often faster solution than loading an entire page structure within an IFRAME.

• Utilize Ajax with JQuery (Highly recommended for easy implementation and great functionality)
• Implement Ajax with Prototype
• Try out Ajax with MooTools
• Explore Standalone Ajax with Matt Kruse's AJAX toolbox (While this was once a popular choice, many now prefer using JQuery due to its robust framework)
• Experiment with AJAX using Dojo (Known for its speed, although it may not be as straightforward as other options)

One way to load tab content using AJAX is by incorporating a div element to display the content. Rather than reinventing the wheel, utilizing an existing Tab library could be a more streamlined option.

Consider exploring the jQuery UI Tab for potential assistance in this scenario.

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UPDATE: Sample of AJAX functionality with UI Tabs integrated.

Initially, the HTML structure will be as follows:

<div id="tabs">
     <ul>
      <li><a href="toframe.html"><span>Overviews</span></a></li>
      <li><a href="tawagpinoygallery.html"><span>Gallery</span></a></li>
      <li><a href="trframe.html"><span>Reviews</span></a></li>
     </ul>
   </div>

Ensure to include the necessary jQuery files:

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.7.2/themes/ui-lightness/jquery-ui.css" type="text/css" media="all" />
  <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js" type="text/javascript"></script>
  <script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.7.2/jquery-ui.min.js" type="text/javascript"></script>
  etc...

Then proceed with implementing the code to generate the tabs:

<script type="text/javascript">
$(function() {
    $("#tabs").tabs();
});
</script>

Why not try a different approach instead of AJAX!

You have the option to load all three potential contents into their own individual DIVs.

By clicking on a tab, you can easily change the display attribute of the relevant content's DIV to "block" while setting the other two DIVs' display property to "none".

This method is cost-effective, simple, and eliminates the need for additional http requests or coding associated with AJAX.

Keep in mind that using AJAX may be more suitable if the tab contents are expected to change dynamically based on external data rather than being predetermined when the page loads.

A more efficient approach would be to store the content for each tab in DIVs within the same page, and then toggle the visibility of each DIV when a tab button is clicked using JavaScript along with the CSS display property.

If this method isn't feasible, another option is to use an iframe. You can set the iframe background as transparent by following the example below:

<iframe src="toframe.html" name= "tabsa" width="95%" height="100%" frameborder="0" allowtransparency="true"></iframe>

To ensure transparency, you'll also need to apply the following CSS to the BODY element:

BODY { Background: transparent; }

Avoid using unnecessary scripts.

<ul><li><a href="#foo">foo link</a><li><a href="#bar">bar link</a></ul>
<div class="tab" id="foo">foo contents</div>
<div class="tab" id="bar">bar contents</div>

Additionally, utilize this CSS rule in most browsers:

.tab:not(:target) { display: none !important; }

. This rule ensures that all content remains visible if :target is not supported by the browser.

When displaying content with script, always make sure to hide it with script as well. This approach ensures graceful degradation in case the script fails to execute properly.

The HTML iframe is typically used to display content that is not part of the main template, such as a PDF file. However, using it for template content (like HTML) is generally frowned upon in terms of both SEO and user experience.

If you are looking to create a tabbed panel, there are multiple ways to achieve this:

1. Create a set of links as tabs and div elements as tab contents. Initially, hide all tab contents except the first one using CSS display: none;. Use JavaScript to toggle between tabs by adjusting the CSS display property accordingly.

2. Use a set of links as tabs and a single div element as the tab content. Utilize Ajax to fetch the tab content asynchronously and use JavaScript to update the content dynamically.

3. Set up a series of links as tabs with a solitary div for tab content. Each link can send a distinct GET request parameter or pathinfo reflecting the selected tab. Employ server-side logic (such as PHP's if() or JSP's <c:if>) or including mechanisms (like PHP's include() or JSP's <jsp:include>) to display the appropriate tab content based on the parameter/pathinfo.

If you opt for a JavaScript-based approach, I highly recommend utilizing jQuery.

Here's a cool example using jQuery to include another HTML page in your document. It's more SEO-friendly than using an iframe. To prevent search engine bots from indexing the included page, just disallow it in your robots.txt.

<html>
  <header>
    <script src="/js/jquery.js" type="text/javascript">
  </header>
  <body>
    <div id='include-from-outside'></div>
    <script type='text/javascript'>
      $('#include-from-outside').load('http://example.com/included.html');
    </script> 
  </body>
</html>

You can also load jQuery directly from Google: http://code.google.com/apis/ajaxlibs/documentation/. This allows for automatic inclusion of newer versions and faster loading times. Of course, you'll have to trust Google to deliver only the jQuery library ;)

To achieve this effect, you have the option of utilizing jQuery or a different library to fetch the data from an HTML file and inject it into the specified div. You can also incorporate a smooth fade transition for added visual appeal.

For detailed information on how to implement this using jQuery, refer to http://docs.jquery.com/Ajax/jQuery.get

An example code snippet could look something like this:

$.get("toframe.html", function(data){
  $("#tabs-1").html(data);
});

If you prefer to prepopulate the content or fetch it dynamically upon click events, you can adjust the script accordingly:

$("#tabs a").click(function(){
   var pagetoget = $(this).attr("href");
   $.get...
})

In case of prepopulation, consider having three containers - two hidden and one displayed by default. The click functions will manage the visibility of these containers as needed.

Utilizing the get method involves less code and is generally more straightforward.