HTML/CSS Popup Window Fade

Ive seen sites where things like a login box will apprear, and the rest of the page will fade, buit the box stays the same. How is this do开发者_StackOverflowne? Can someone please give me an example? Thanks!

Check link text

And add following code on head section for faded background

<script language="Javascript">

$(document).ready(function() {
$.facebox.settings.opacity = 0.2
});

</script>

You can use any of the jquery lightbox /modal scripts to achieve the effect. There's lot of scripts that do what you are trying to achieve. My personal recommendations would be SimpleModal (if you need something just for a login window) or ColorBox (if you need multiple overlays and require a lot of customization)