css javascript expression error

I am using a css layout template (found at : [url]http://www.webproducer.at/flexible-layout[/url]).
It uses a seperate css for internet explorer to implement max-width using a javascript expression.

width: expression( (d = document)
&& (fs = d.getElementById(’em’).offsetWidth)
&& (po = 2 * fs)
&& (bo = 3)
&& (min = 50 * fs)
&& (max = 70 * fs)
&& (cw = d.body.clientWidth)
&& (px = ‘px’)
&& (cw – po >= max + bo ? max + px : cw – po <= min + bo ? min + px : ‘auto’)
);

here are the notes that came with it:

About the weird dynamic property expression

fs = font-size (from the #em element)
min = min-width
max = max-width
po = padding offset (from the body)
bo = border offset (from the #main container, IE 6 seems to need one additional px)
cw = client width
px = pixel

Now for some reason this is conflicting with any php page I have, it works fine for html.
And I have traced the root of the problem to this expression.
Since I don’t know javascript, I can’t see if it is written properly or not, and I do not understand why it is giving me errors.

Here is the website:

[url]http://janjaniszewski.ca[/url]
(you have to use ie to see the errors)

Any help will be much appreciated, and will save me tons of time moving the website to a new layout.

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