为什么再我没有点图片PLAY按钮的时候，图片自动跳转啊？刚刚开始做WEB程序，希望高手指教！

Question

<td align="center" valign="middle" style="height: 26px; width: 469px;">
<asp:ImageButton ID="ibPrev" runat="server" ImageUrl="~/images/button_back.gif" OnClick="ibPrev_Click" />
<asp:ImageButton ID="ibNext" runat="server" ImageUrl="~/images/button_next.gif" OnClick="ibNext_Click" />
<asp:ImageButton ID="ibPlay" runat="server" ImageUrl="~/images/button_play.gif" OnClick="imgplay()" />
<img  id="imgStop" src="images/button_stop.gif"   />                        <script language="javascript">
                        function imgplay()
                      var timer = setInterval("document.getElementById('<%= ibPlay.ClientID %>').click()", 4000);
                      }                                                function stop()
                                                {
                                                  clearInterval(timer);
                                                }
                                            </script>
                                        </td>

Answer 1

<script language="javascript">
                        function imgplay()
{
                      var timer = setInterval("document.getElementById('<%= ibPlay.ClientID %>').click()", 4000);
                      }                                                function stop()
                                                {
                                                  clearInterval(timer);
是这样吗？TIMER这个变量可以再STOP中有效？
                                                }

Answer 2

<script language="javascript">
var timer;
                        function imgplay()
{
                      timer = setInterval("document.getElementById('<%= ibPlay.ClientID %>').click()", 4000);
                      }                                                function stop()
                                                {
                                                  clearInterval(timer);                                                }

Answer 3

我改了以后，发现它不循环了！是不是那里有问题啊！
我把PLAY换成了IMAGE控件！
<img id="imgPlay" src="images/button_stop.gif" onclick="imgplay()"/>
是不是哪里写错了啊 ？

Answer 4

<asp:ImageButton ID="ibPrev" runat="server" ImageUrl="~/images/button_back.gif" OnClick="imgplay()" />
<asp:ImageButton ID="ibNext" runat="server" ImageUrl="~/images/button_next.gif" OnClick="imgplay()" />
<asp:ImageButton ID="ibPlay" runat="server" ImageUrl="~/images/button_play.gif" OnClick="imgplay()" />看能不能循环，
再加上ibPrev_Click
<asp:ImageButton ID="ibPrev" runat="server" ImageUrl="~/images/button_back.gif" OnClick="imgplay();ibPrev_Click" />
<asp:ImageButton ID="ibNext" runat="server" ImageUrl="~/images/button_next.gif" OnClick="imgplay();ibNext_Click" />
<asp:ImageButton ID="ibPlay" runat="server" ImageUrl="~/images/button_play.gif" OnClick="imgplay()" />

Answer 5

因为.NET是代码分离的，所以不能用<asp:imagebutton>这样的控件执行客户端代码！<asp:imagebutton>是服务器控件，只能在HTML页面执行JAVASCRIPT代码！

Answer 6

网页上提示ibNext控件没有申明啊！
怎么解决啊？
我把ibPlay按钮换成ibNext按钮了！因为控制代码都在ibNext按钮中！