100求解---------套用母版后使用时间控件的问题。
如果是单独页面:----------------显示正常 
  <head   id= "Head1 "   runat= "server ">  
  <title> 日历控件 </title>  
  <script   type= "text/javascript "   src=popcalendar.js>  </script>  
  </head>  
  <body>  
              <form   id= "form1 "   runat= "server ">  
              <div>  
              <asp:textbox   id= "t1 "   runat= "server "   Width= "100px "   ReadOnly= "True ">  </asp:textbox>  
                          <img   id= "Image_blqx1 "   style= "CURSOR:   hand "   onclick= "popUpCalendar(this,document.forms[0].t1, 'yyyy-mm-dd ') "src= "images/calendar.gif "   />  </div>  
              </form>  
  </body>  
 ------------------------------- 
 套用母版后:------------(提示错误) 
 在母版head添加 
     <script   type= "text/javascript "   src=popcalendar.js>  </script>  
 在页面内添加 
  <img   id= "Image_blqx1 "   style= "CURSOR:   hand "   onclick= "popUpCalendar(this,document.forms[0].t1, 'yyyy-mm-dd ') "   src= "images/calendar.gif "   />      
 这个控件是在网上拉的。 
 地址为:http://tmsoft.lsxy.com/index.php?load=read&id=222 
 页面最下面的一个时间控件~
------解决方案-------------------- <img id= "Image_blqx1 " style= "CURSOR: hand " onclick= "popUpCalendar(this,document.getElementById( ' <%=t1.ClientID%>  '), 'yyyy-mm-dd ') " src= "images/calendar.gif " />
------解决方案--------------------如下,测试过,好用,把script 加到本页,同时用document.all. <%=t1.ClientID%> 取id   
 ------------------------------------- 
  <asp:Content ID= "Content1 " ContentPlaceHolderID= "ContentPlaceHolder1 " Runat= "Server ">  
  <script type= "text/javascript " src= "popcalendar.js ">  </script>    
  <div>  
      <asp:textbox id= "t1 " runat= "server " Width= "100px " ReadOnly= "True " CssClass= "edLine ">  </asp:textbox>    
          <img id= "Image_blqx1 " style= "CURSOR: hand " onclick= "popUpCalendar(this,document.all. <%=t1.ClientID%> , 'yyyy-mm-dd ') " 
                                  src= "images/calendar.gif " />  </div>  
  </asp:Content>