<form>
<select name="menu">
<option selected value="style1()">风1</option>
<option value="style2()">风2</option>
</select>
<input onclick="this.form.menu.options[this.form.menu.selectedIndex].value" type="button" value="启动" name="button1">
</form>
<select name="menu">
<option selected value="style1()">风1</option>
<option value="style2()">风2</option>
</select>
<input onclick="this.form.menu.options[this.form.menu.selectedIndex].value" type="button" value="启动" name="button1">
</form>
<select name="menu">
<option selected value="style1()">风1</option>
<option value="style2()">风2</option>
</select>
<input onclick="alert(this.form.menu.options[this.form.menu.selectedIndex].value)" type="button" value="启动" name="button1">
</form>