Easy Java Script Expanding Banner Code
By Stephen Bucaro
The most common method for advertising on the Web is banners. But the standard banner
may be too small to provide enough information. Instead of using "in your face"
skyscraper or double-wide banners, you can make a standard banner that expands to show
more information. In this article, I provide you with easy code to create several
different kinds of expanding banners.
The code consists of four parts:
1. An html <span> element on your webpage
2. One or two optional graphics images
3. One or two Cascading Style Sheets (CSS) classes
4. One or two Java Script functions
Don't be scared off by the (CSS) classes or Java Script functions, I promise you, this
is very easy to do. Lets do the most difficult example first. This first example does
not use a graphic image for the banner, it relies entirely on CSS to create the banner.
The banner is defined as a <span> in the <body> section of your webpage, the html is shown below.
<span class="expandable" id="banner">Move mouse pointer over banner</span>
Note that the span has a class attribute and an id attribute defined. The text "Move mouse
pointer over banner" is the text that will appear on your banner. Replace this text with
your advertising message.
The code for the CSS class "expandable" is shown below. Paste this code in the <head>
section of your webpage.
<style type="text/css">
.expandable
{
position: absolute;
left: 0;
top: 0;
width: 468;
height: 60;
border-style: solid;
border-width: 4;
border-color: blue;
margin: 10px;
padding: 5px;
background-color: yellow;
background-image: url("background.gif");
color: red;
font-family: Arial;
font-weight: bold;
font-size: 20pt;
font-style: italic;
z-index:2;
visibility: visible;
}
</style>
The purpose of this article is give you some quick easy working code, not to bog you
down with a long-winded explanation of CSS. So I will point out only a few important
facts about the CSS code. The lines left: 0; top: 0; width: 468; and height: 60; define the
location and size of the banner. Note that the standard banner size is 468 x 60 pixels.
The code defines a background-color property and a background-image property. Obviously
it is not useful to define both of these properties together. Delete the line for the
one you don't want to use.
Most of the other "property: value;" pairs defined in the class are self explanatory
and you can experiment with them. Except for the color property, which actually applies
to the text color.
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