page is as follows (intercept part):
< ul class= "lot-award" >
<li class="logo"><a href="http://www.beijingsaiche.com/pk10/" title="PK10">PK10</a></li>
<li class="currentAward">
<div class="title"> :</div>
<div class="period" style="color: green;"><span style="color: green;" id="NoMini">0</span></div>
<div class="period-info"><span id="OneDayOpenSum">--</span><span class="period-leave"
id="TodayTrueNo">0</span>
</div>
<div class="lot-nums" id="Num"></div>
</li>
<li class="warnTime">
<div class="title">
<div style="color: green;font-weight:bold;"><span style="color: green;font-weight:bold;"
id="NoWill">--</span>
</div>
<div></div>
</div>
<div class="minute" id="Time_i">00</div>
<div class="t2"></div>
<div class="second" id="Time_s">00</div>
<div class="t2"></div>
<div class="SoundOpen" id="Sound" title="" onclick="Sound();"></div>
<audio src="http://www.beijingsaiche.com/static/pc_public/images/du.mp3" id="duSound" style="display:none;"></audio>
</li>
<li class="live">
<a href="http://www.beijingsaiche.com/pk10/zb.html" title="PK10" target="_blank"></a>
</li>
</ul>in this code, what should I do if I want to get the value of id in the < div class= "period" style= "color: green;" > < span style= "color: green;" id= "NoMini" > 0 period < / div >?