This is a silly question since I can\'t find the right keywords to use to get the answer by searching Google, unfortunately.
You know when you click a link and the b
You can use smoothbox, along with mootools.
it's done by creating an overlaying div on the fly in JS, like:
var gab = document.createElement('div');
gab.setAttribute('id', 'OVER');
gab.innerHTML='<div class="overlay"><h1>hello</h1></div>';
document.body.appendChild(gab);
use a CSS class like
#OVER{width:100%; height:100%; left:0;/*IE*/ top:0; text-align:center; z-index:5; position:fixed; background-color:#fff;}
.overlay {width:100%; z-index:6; left:0;/*IE*/ top:30%; font-color:#cdcdcd; font-size:0.8em; text-align:center; position:fixed; background-color:#000;}
dunno how it's called ..
For images and stuff i use prettyphoto
For text popup Dialog
this is all done with the use of jquery a javascript
You want to create a "modal box" or "lightbox". Examples:
thickbox
eg: http://jquery.com/demo/thickbox/