Thanx ....
this was really helpful...

we can call the same function used to capture rest of mouse and key events(onkeyup, onblurr etc) .


this is wat i did for a multiline textbox to change the height dynamically

Code:
<asp:TextBox ID="txtdemo" runat="server" TextMode="MultiLine" Width="286px" onmouseup = "fnStartClock()" onkeydown="textAreaSize()"
...