Problem with administration pannel (Virtuemart 2.0.26)

[_Luca_]

Hi,
my name is Luca and this is my first post.

I have a problem with Virtuemart 2.0.26 on joomla 2.5.17.  On Administration pannel (Products and others) I can't see, in its entire length, products list .

I enclose a picture.

Can anyone help me? I don't understand why.

Thank You.

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