Scrolling Text

[wuzzle]

There is scrolling text here:

http://www.uwinnipeg.ca/~jbachyns/conedwww/wd6/anime.htm

(the 3rd example) but I have no idea why it works. Could someone please explain this to me?
Thanks.

function ex3(obj){
if(ex3switch=="on&quot{
document.getElementById(obj).style.display="inline";
if(pos > -100){
document.getElementById(obj).style.left=pos+"%";
pos--;
setTimeout("ex3('eg3')", 100);
}else{
pos=100;
setTimeout("ex3('eg3')", 100);
}
}else{document.getElementById(obj).style.display="none"}
}

 

[iza]

it's using style sheets - CSS positionning
you can read about it on the w3c siten (there must be easy tutorial somewhere but i don't know where - w3c will give you the full specification & syntax etc)
basically this function says : if the text should not be visible, hide it, else if the text is above a certain value, scroll else don't move