You can access the value of an attribute node using an expression such as
<xsl:value-of select="@p:ElementType"/>
Make sure that (a) you are positioned on the right element as context node, and (b) that the namespace prefix p is declared in the stylesheet.
Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference