请教下，现在有个主窗体main.aspx中嵌套2个frame
<frameset rows="*" cols="200,200" frameborder="no" border="0" framespacing="0" id="frame1" name="frame1">
<frame id="a" name="leftmenu" scrolling="auto" noresize src="a.aspx" frameborder="0">
<frame id="b" name="callleftmenu" scrolling="no" noresize src="b.aspx" frameborder="0">
</frameset>
现在在b.aspx中有个按钮（服务器端控件）,如何才能在按钮的点击事件里刷新a.aspx?
<frameset rows="*" cols="200,200" frameborder="no" border="0" framespacing="0" id="frame1" name="frame1">
<frame id="a" name="leftmenu" scrolling="auto" noresize src="a.aspx" frameborder="0">
<frame id="b" name="callleftmenu" scrolling="no" noresize src="b.aspx" frameborder="0">
</frameset>
现在在b.aspx中有个按钮（服务器端控件）,如何才能在按钮的点击事件里刷新a.aspx?
Response.Write("<script>window.open('PageName.aspx','frame的名字');</script>")