XSLT delete zeros on the left side -

i have value:

<stredisko><xsl:value-of select="@stredisko" /></stredisko> 

and @stredisko can have values: 1000 or 0025 or 0002. , need delete zeros on left side. right results is: 1000 or 25 or 2.

have ideas?

how about:

<xsl:value-of select="number(@stredisko)" />