need to limit a For:each loop

Hi,

I'm totally new to XSL (didn't know it existed till yesterday!) 
i downloaded a RSS newsfeed script for my website and started to modify
the design of it to suit my needs
the current output can be seen here
http://www.discountfirepagers.com/rss2/default.asp
as you can see there are many articles ... 
I wish to limit the articles to just 5 items. however i can't figure how
to modify the XSL to do that for me 
i know i have to break the for:each somehow or change it to a specified
loop but can't find any info on how to do this 
can someone help please 
Here is the XSL http://www.discountfirepagers.com/rss2/news.xsl
here is the XML
http://news.search.yahoo.com/news/rss?p=fire%20department


XSL

  <?xml version="1.0" ?> 
- <xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output method="xml" omit-xml-declaration="yes" indent="yes" /> 
- <xsl:template match="*">
- <table border="0" width="100%" bgcolor="#666666" align="center">
- <tr>
- <td valign="top" bgcolor="white" class="headlines">
- <ul>
- <xsl:for-each select="//*[local-name()='item']">
- <li>
- <a>
- <xsl:attribute name="href">
  <xsl:value-of select="*[local-name()='link']" /> 
  </xsl:attribute>
- <xsl:attribute name="target">
  <xsl:text>top</xsl:text> 
  </xsl:attribute>
- <font face="Verdana, Arial, Helvetica" color="#333333" size="0">
  <xsl:value-of select="*[local-name()='title']" /> 
  </font>
  </a>
  </li>
  </xsl:for-each>
  </ul>
  </td>
  </tr>
  </table>
  </xsl:template>
- <xsl:template match="/">
  <xsl:apply-templates /> 
  </xsl:template>
  </xsl:stylesheet>