The code snippet below is from my frameset.jsp file:
</head>
<iframe width="100%" src="mail_frame.html"></iframe>
<iframe width="105px" height="100%" src="sidenav.html" id="leftnav" name="leftnav" ></iframe>
<iframe height="100%" src="body.htm" id="main" name="main"></iframe>
</html>
Is there a way to create a dropdown menu in the mail_frame.html that will overlap the other two frames located beneath it? How can this be achieved?
There is no way to position frame content outside of the frame itself.
Although it's possible to use cross-frame Javascript to display a dropdown in another frame, this method is considered a hack and can lead to complications.
A more efficient approach would be to avoid using frames altogether. You can achieve a similar layout by using a server-side script that combines all necessary components (mail_frame.html, sidenav.html, body.html) into a single page.
In PHP, you can accomplish this with code like the following:
</head>
<div id="mail_frame"><?php include('mail_frame.html'); ?></div>
<div id="leftnav"><?php include('sidenav.html'); ?></div>
<div id="main"><?php include('body.html'); ?></div>
</html>
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