这个跳转菜单为什么不跳转
<form name="fengongsi">
<select name="fengongsi" onchange="MM_jumpMenu('parent.frames[\'bottomFrame\']',this,0)">
<option value="?fengongsi">请选择分公司</option>
<option value="?fengongsi=BJ1">BJ1</option>
<option value="?fengongsi=SZ1">SZ1</option>
<option value="?fengongsi=SZ2">SZ2</option>
<option value="?fengongsi=JH1">JH1</option>
<option value="?fengongsi=LZ1">LZ1</option>
</select>
</form>
<form name="fengongsi">
<select name="fengongsi" onchange="MM_jumpMenu('parent.frames[\'bottomFrame\']',this,0)">
<option value="?fengongsi">请选择分公司</option>
<option value="?fengongsi=BJ1">BJ1</option>
<option value="?fengongsi=SZ1">SZ1</option>
<option value="?fengongsi=SZ2">SZ2</option>
<option value="?fengongsi=JH1">JH1</option>
<option value="?fengongsi=LZ1">LZ1</option>
</select>
</form>
貌似是dw自动生成的。onchange="window.location.href=this.value;"
onchange="showurl(this)"
function showurl(obj){
window.location.href=地址+obj.value;
}