Friday, June 27, 2008
Pure CSS Image Rollover without background-image
The other day I was in a situation where I had an image that changed to another image when the user mouses over it. Usually I will do this in one of two very standard ways:
This neat CSS trick leaves the images in the html and changes the image on rollover with minimal mark-up. It works by abstracting the :hover pseudoClass to the container, loading both images into the page, and controlling the rollover effect using the images' display attribute.
One word of caution: some older browsers (I'm looking at you, IE6) have poor support for the :hover pseudoclass, which renders this example ineffective; thus if you're supporting a lot of legacy browsers, this may not be for you. However, if you need a rollover that uses actual image tags and want to avoid using javascript, this may be just what you need.
- The typical javascript approach: using the onMouseOver and onMouseOut events to swap the images.
- The typical css approach: an element that sets its background-image attribute to the default image, and changes its background-image attribute to the rollover image when the :hover pseudoclass is activated.
The HTML:<div class="buttonContainer">The CSS:
<img class="rest" src="link_rest.png" />
<img class="roll" src="link_roll.png" />
</div>div.buttonContainer img.roll {
display: none;
}
div.buttonContainer:hover img.roll {
display: inline;
}
div.buttonContainer:hover img.rest {
display: none;
}
This neat CSS trick leaves the images in the html and changes the image on rollover with minimal mark-up. It works by abstracting the :hover pseudoClass to the container, loading both images into the page, and controlling the rollover effect using the images' display attribute.
One word of caution: some older browsers (I'm looking at you, IE6) have poor support for the :hover pseudoclass, which renders this example ineffective; thus if you're supporting a lot of legacy browsers, this may not be for you. However, if you need a rollover that uses actual image tags and want to avoid using javascript, this may be just what you need.
Comments:
Due to my lack of knowledge, I don't want to discuss it. I've read a lot of papers on the topic and listened to several lectures, but I don't have the education or credentials to speak intelligently about it. I have read all the articles about it on critical essay writing service, the greatest service for assignments.
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I think this sounded clever, so I have tried it in IE 7.
But I cannot make it work.
Can anyone else?
But I cannot make it work.
Can anyone else?
# posted by 
: 2:13 p.m.
: 2:13 p.m.
CSS hover effects gives us the ability to animate changes to a CSS property value. In your lesson we are going to follow that up with different kinds of effects. It is specifically built for use with images. However these effects can make your site feel much more dynamic and alive. The effects will be using today all use code that is supported by modern browsers. Dullness is the opposite of transparency. It’s allowing no light to pass through. You can create transparent images in CSS with the dullness property.
Layering images over one another is a great way to give an Image a new Look. Here the CSS code that display text on image while mouse hover. You can fit all graphics for your whole site in one sprite. If you are feel like doing all the pixel calculations for background positioning. You would still need to give each button its own class name. Since each button would have different position inside the sprite itself.
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Layering images over one another is a great way to give an Image a new Look. Here the CSS code that display text on image while mouse hover. You can fit all graphics for your whole site in one sprite. If you are feel like doing all the pixel calculations for background positioning. You would still need to give each button its own class name. Since each button would have different position inside the sprite itself.
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