다중 select를 선택하여 검색버튼을 누르면 꼭 두번 눌러야 검색이 됩니다.

<form name="fsearch" method="post" action="<?=$_SERVER['PHP_SELF']?>" style="margin:0px;"><input type="hidden" name="bo_table" value="<?=$bo_table?>"><input type="hidden" name="sfl" value="wr_7||wr_6"><input type="hidden" name="sop" value="and"><input type='hidden' name="stx" value='<? echo $stx?>'>
<div style="background:url(/images/re_bg.gif); width:763px; height:98px; clear:both;">  <div style="padding-left:300px; padding-top:25px; float:left; ">  <p> <span class="step">step01</span>  <select style="width:200px" name="stx_t1" onchange="loaddata2(stx_t1.options[stx_t1.selectedIndex].value);">   <option value="" >선택하세요</option>   <?     $query="SELECT distinct o_option2 FROM g4_option where o_code ='일반' ORDER BY o_od desc";      $qry = sql_query($query);     while($res = sql_fetch_array($qry)) {   ?>           <option value="<?=$res[o_option2]?>">             <?=$res[o_option2]?>             <? } ?>  </select>  </p>   <p style="padding-top:10px;"><span class="step">step02</span>  <select style="width:200px" name="stx_t2" onchange="loaddata2(stx_t1.options[stx_t1.selectedIndex].value);">   <option value="" >선택하세요</option>  </select>  </p> </div> <div style="float:right; padding:16px 40px 0 0;"><img src="/images/btn.gif" onclick="document.fsearch.submit();"></div></div></form><!-- /검색 -->