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Showing and Hiding HTML elements using Layers

By Amrit Hallan
Posted Monday, July 19, 2004

A long time back I visited a site that had a very fancy, animated navigation bar. Now, as a professional web developer, I'm not in favor of DHTML-supported, fancy navigation bars, but it was very fascinating. What they had done was, whenever you hovered your cursor over a link, a big, comics-type dialog balloon appeared to give further details of that link. I wondred how they did it, but then it slipped out of my mind.

That technique uses layers and Cascading Style Sheet definitions, and I'm going to tell you here, how it is done. Nothing pyrotechnic, but it'll pay a way to more complex tasks.

First, the demo. I believe once you visually see it, you'll understand better what I'm trying to accomplish here. Given below is a link. If you take your cursor over the link, an image appears somewhere on the screen. By tweaking you can control the placements. You can see the demo, along with the online version of this article at:


I've purposely made the image appear over a text area so that you don't think it is a simple rollover image effect. The image actually appears above the text.

Below lies the code that of the effect that appears above.

First the HTML part that defines the general link and the division that defines the placement of the image. Take note of the CSS definitions required to set the z-index and the "hide" attributes. Before testing the code, remember to remove the preceding dots that I have appended so that your email software doesn't read the code as some "process-able" content.

.Bring Your Cursor Here and See The Image


After this comes the quintessential JavaScript that actually performs the act. In between I've inserted comments using the way they are used in JavaScript, that is, using //.


So this is how it works!

About the Author
Amrit Hallan is a freelance web designer. For all web site development and web promotion needs, you can get in touch with him at ( For more such articles, visit ( and ( You can subscribe to his
newsletter [BYTESWORTH REACHOUT] on Web Designing Tips & Tricks by sending a blank email at


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