Vertical align top in css

Question

Here is my code

<div style="margin:0;padding:0;vertical-align:text-top; border:1px solid red;float:right;">
     <span>Key:</span>
     <asp:TextBox ID="tbKey" MaxLength="16" runat="server" ></asp:TextBox>
     <asp:ImageButton ID="btnRefresh" runat="server" imageUrl="_img/btn_submit.gif" Height="22" Width="52" />
</div>

I would like all three elements to simply line up at the top. Is this doable?

EDITED: Source code (rendered) is

 <div style="margin:0;padding:0;vertical-align:text-top; border:1px solid red;float:right;">
                <span>Key:</span>
                <input name="tbKey" type="text" maxlength="16" id="tbKey" />

                <input type="image" name="btnRefresh" id="btnRefresh" src="_img/btn_submit.gif" style="height:22px;width:52px;border-width:0px;border-width:1px;" />

            </div>

Answer 1

I usually use

 display: inline-block;

in this situation. That should cause the layout to respect

vertical-align: top;

rules.

This is similar to @Jason Ellis's table-cell solution, but more semantic since this is not a table.