题头

function changeImgTest(formName,fieldName){
  var sortFieldName = eval("reqItemQuotaForm.sortFieldName.value;");
  var sortType = eval("reqItemQuotaForm.sortType.value;");
     if (sortFieldName == fieldName) {
      if (sortType == 'desc') {
       reqItemQuotaForm.sortType.value = 'asc';
      }else{
       reqItemQuotaForm.sortType.value = 'desc';
      }
     }else{
      reqItemQuotaForm.sortType.value = 'desc';
     }
     reqItemQuotaForm.sortFieldName.value = fieldName;
     reqItemQuotaForm.submit();
 }

 

<th width="8%"><nobr><font onClick="changeImgTest('reqItemQuotaForm','materialName');" ><u>物资名称</u></font></nobr><%if (strFieldName.equals("materialName")){if (strSortAttribute.equals("asc")){%><img src="<common:webRoot/>/mm/images/arrow_up.gif" valign="top"><%}else if(strSortAttribute.equals("desc")){%><img src="<common:webRoot/>/mm/images/arrow_down.gif"><%}}%></th>