Centre column content dissapearing in IE6

Hello, I am creating this website: www.aquilaciencia.es and I am trying to get the content of the centre column for the products page www.aquilaciencia.es/nuestros_libros alligned to the left, all the text including the title of the page having the same margin. I can't seem to find a way to move the products data enough to the left unless I give the left margin for div.producttext the negative value -60px. But then part of the text dissapears in ie6, it is correct in firefox, safari and ie7 and 8.
Is there a way I can fix this or either fix the allignment issue without using negative values? If you look at the page www.aquilaciencia.es/nuestros_libros you see the text "Nuestros libros" and "Introduzca los..." are not alligned with "365 Soluciones" even though I set the left margin for "365" to -60px.

Thank you very much.