select列表内容交换的js实现代码

<form name="form1"> <table><tr> <td> <select multiple name="left" size="7" ondblclick="move(this,this.form.right)"><option value="0" selected>item1 </option> <option value="1">item2 </option> <option value="2">item3 </option> <option value="3">item4 </option> <option value="4">item5 </option></select> </td> <td> <input type="button" name="moverigth" value=">>" onclick="move(this.form.left,this.form.right)"><input type="button" name="moveleft" value="<<" onclick="move(this.form.right,this.form.left)"> </td> <td> <select multiple name="right" size="7" ondblclick="move(this,this.form.left)"><option value="0" selected>test1 </option> <option value="1">test2 </option> <option value="2">test3 </option> <option value="3">test4 </option> <option value="4">test5 </option></select> </td> </tr></table> </form>
[ctrl+a 全选 注:如需引入外部js需刷新才能执行]