[SOLVED] Simple modal div in jQuery?

Simple modal div in jQuery?

I have tried almost all of the jQuery Modal plugins I can find on the net but they are all much to bulky for what I need. I don't need all the fancy features, I want to be able to open a div and have the background of the page go transparent grey like the photo below and have my div be on top of it, that is all I need to do so I would like to write some jQuery to do this instead of using a bulky plugin. Does anyone have any small code that can do this task? Is the transparent background an image or just CSS?

Solution

EDIT: This is obviously outdated. So please refer to Andrew Odri post below.

I don't know how good you are in CSS and JavaScript, but your request shouldn't be that hard to do yourself.

body, html { margin:0; padding:0; }
#modalTabelGray
{
    position:absolute;
    width:100%;
    height:100%;
    background-color:#000000;
    filter:alpha(opacity=60);
    opacity:0.6;
    -moz-opacity:0.6;
    z-index:100;

    text-align:center;
    vertical-align:middle;
}

#modalDiv
{
    position:absolute;
    z-index:101;
}

I haven't tested the code, might not work, but you'll get the idea.