如何撑满网页对话框
<body>
<form id="form1" runat="server">
<div runat="server" style="width:100%;">
<table style="width:100%;height:100%;"cellpadding="0" cellspacing="0" border="0">
<tr>
<td style="height:80%;">
<asp:TreeView ID="channelList" runat="server" ShowCheckBoxes="All" Height="100%" OnTreeNodePopulate="TreeView_TreeNodePopulate" ShowLines="True"></asp:TreeView>
</td>
</tr>
<tr>
<td style="height:10%; border-bottom: lightgrey thin solid;">
</td>
</tr>
<tr>
<td style="height:10%; background-color:#99ccff; text-align: center; border-top-width: thin; border-top-color: #cccccc;">
<asp:ImageButton ID="ibtSubmit" runat="server" AlternateText="" ImageUrl="~/Image/Admin/button-submit.gif" OnClientClick="return OnClickButtonSubmit()"/>
</td>
</tr>
</table>
</div>
</form>
</body>
我现在想table可以撑满整个网页对话框 不知道应该怎么实现