How do I change the invoice template so that the table for customer information and the table for products will start at the same line?

Dear All,
I have tried to modify a invoice template. I have managed to make the design to almost fit my preference.

However, there is one disturbing thing which I cannot solve by myself.

You can download an pdf-file that shows the template and how I want to change it.

www.myjoice.jp/print/Billing.zip

I am sure it is a very simple and easy operation if you know HTML,,,,but unfortunately I do not know....so I need your help.

Where in the html code and how should I change so that the both table will start at the same vertical position?
(I want the table that is marked with circle 2, to start there the table marked with circle 1 starts).

I would be very happy and very long term customer of Zoho-invoice if I can get help to solve this problem.

Best Regards,
Bjorn