JavaScript自定义模式对话框

<script language=javascript>
        function openDialogWin()
>

<input type=button value="按钮" name="btn" onclick="openDialogWin()" />

            Response.Write("<script language='javascript'>");
            Response.Write("function confirm(){ window.returnValue='Yes';window.close(); }");
            Response.Write("function cancel(){ window.returnValue='No';window.close(); }");
            Response.Write("</script>");
            Response.Write("<div align='center'><input type='button' value='Yes' onclick='confirm()' /><input type='button' value='No' onclick='cancel()' /></div>");