name="l00028"></a><span class="lineno">   28</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="comment">low=high=band=0;</span></div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="comment">//--beginloop</span></div><div class="line"><a name="l00032"></a><span class="