请教：日期选择框，selenium如何定位页面元素

请教，下面的html，如何定位页面元素（年、月），试了好多方法都不可以

<div class="inputRow">
<span>购车日期</span>
<input id="buyDate" type="hidden" name="buyDate" value="2013-12">
<span id="year__jQSelect0" class="dropdown" tabindex="0" style="width: 72px; height: 31px; z-index: auto; position: relative;">
<select id="year" class="select_yy select_zdy2" onchange="changeBuyDate(this)" style="display: none;">
<option value="2004">2004</option>
<option value="2005">2005</option>
<option value="2006">2006</option>
<option value="2007">2007</option>
<option value="2008">2008</option>
<option value="2009">2009</option>
<option value="2010">2010</option>
<option value="2011">2011</option>
<option value="2012">2012</option>
<option value="2013">2013</option>
<option value="2014" selected="true">2014</option>
</select>
<span class="dropselectbox select_zdy2" style="z-index: 101;">
<h4 class="" style="width: 44px; padding-right: 24px;">2013</h4>
<ul style="width: 63px; display: none; top: 31px;"></ul>
</span>
</span>
<lable style="font-weight:normal;color:white;">年</lable>
<span id="month__jQSelect1" class="dropdown" tabindex="0" style="width: 72px; height: 31px; z-index: 99;">
<select id="month" class="select_mm select_zdy2" onchange="changeBuyDate(this)" style="display: none;">
<option value="01"> 01 </option>
<option value="02"> 02 </option>
<option value="03"> 03 </option>
<option value="04"> 04 </option>
<option value="05"> 05 </option>
<option value="06"> 06 </option>
<option value="07"> 07 </option>
<option value="08"> 08 </option>
<option value="09"> 09 </option>
<option value="10"> 10 </option>
<option value="11"> 11 </option>
<option value="12"> 12 </option>
</select>
<span class="dropselectbox select_zdy2" style="z-index: 101;">
<h4 class="" style="width: 44px; padding-right: 24px;"> 12 </h4>
<ul style="width: 63px; display: none;"></ul>
</span>
</span>
<lable style="font-weight:normal;color:white;">月</lable>
</div>