Javascript code for overlapping info box?

[Daniel]

Hi, i would really like to have a table or "box" of information to come up and overlap my website when a button is clicked, exactly like the pictures in facebook, only with information from the website... is there any code i can use in javascript or anything similare that will make that happen?

[immensewater823]

CSS Positioning method:
h2.pos_top
{
position:relative;
top:-50px;
}
~
change "top:-50px;" to the info box position,
so it overlaps.