[Users] Problems with doctype in the top of document

Thu May 5 14:54:28 CEST 2011

Hi all, anyone could tell me why when I am using GeoExt MapPanel to contain
a openlayers map  this map is not shown in the page when I use the sentence
"<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
      "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">" int the
top of the document. When I remove the doctype sentence all works fine and
the map is shown. I´m getting crazy. I don´t know how to solve it.

Please, could anyone help me?

Thx a lot!!!
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