What do these scripts do?

I found somewhere these 2 little scripts and wonder what they do:

if ( top.location != this.location ) top.location = this.location;

var jsg_jezik_S = “si”;

function um_slika(s)
{
um_okno(s, 650, 650, null, “eZdravjeSlika”)
}

translation:
jezik = language
slika = image
okno = window

And the other one:
function showhide(ecid)
{
var ec = document.getElementById(ecid);
if (ec.style)
{
if (ec.style.display == ‘none’)
{
ec.style.display = ‘block’;
}
else
{
ec.style.display = ‘none’;
}
}
}

Thanx, Ivo.

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