出问题啦！~JSP页面..struts标签内 实现 鼠标放上去放大图片功能！

-----------鼠标放上去放大图片------------<Img src="images/1/1_4.gif" width= "67" id="img1" onmouseover="img1.style.width='115';"
onmouseout="img1.style.width= '67';">
这段代码 在HTML里运行完全正常..
但是，当我将这段代码加到JSP页面了~
!!!!!!!!!!!!!!!!!style 为空或不是对象!!!!!!!!
-----------
 <logic:iterate id="item" name="roomForm" property="pageResult.list"
                      type="com.yourcompany.entity.Room">
            <tr align="center" bgcolor="#FDF7E7"  class="span">
              <td class="row">
<Img src="images/1/1_4.gif" width= "67" id="img1" onmouseover="img1.style.width='115';"
onmouseout="img1.style.width= '67';"></td>
              <td class="row">${item.bianhao }</td>
              <td class="row">${item.frame.frmName }</td>
              <td class="row">${item.area }m<sup>2</sup></td>
              <td class="row">${item.daterent }元</td>
              <td class="row">${item.monthrent }元</td>
              <td class="row">${item.apartmentName }</td>
              <td class="row"><a href="room.do?method=toDetil&id=${item.roomId}">查看</a></td>
            </tr>
          </logic:iterate>