Hot to make this script?

I want to make a script where something just pops up on your screen when you visit a website. The same way as it does when you visit http://www.daniweb.com/

How do i do that?

 

I think you are refering to a LightBox. You probable should search the web for one that's already made.

 

No i dont think it's lightbox....it looks a bit different at daniweb.com and it opens up automatically.

Got any other idea??

 

http://www.shadowbox-js.com/


Then use something like:

window.onload = function(){

    // open a welcome message as soon as the window loads
    Shadowbox.open({
        content:    '<div id="welcome-msg">Welcome to my website!</div>',
        player:     "html",
        title:      "Welcome",
        height:     350,
        width:      350
    });

HTML: