how to pass value from params to a label in javascript ?

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C#

ASP.NET

Javascript

Hi,
I am trying to pass some values from HTML to HTML without using code behind. I have a function of java script which do the work but not as I want. I want that the values coming from one page to second, can be stored and shown in label instead of openly writing it on HTML page and I am not able to do so. Can anyone please tell me where am I going wrong ?
Here is my code:

params = getParams();
firstname = unescape(params["firstname"]);
lastname = unescape(params["lastname"]);
age = unescape(params["age"]);
document.write("firstname = " + firstname + "<br>");
document.write("lastname = " + lastname + "<br>");
document.write("age = " + age + "<br>");
var lbl = document.getElementById('<%=lbl.ClientID%>');
lbl.innerHTML=firstname.

and this is my html code on second page:

<form id="form1" runat="server">
<asp:Label ID="lbl" runat="server" Text="Label"></asp:Label>
   </form>

"



and here is my code on first page:

<form type=get action="second.aspx">
<table>
<tr>
<td>First Name:</td>
<td><input type="text" name="firstname" size="10"></td>
</tr>
<tr>
<td>Last Name:</td>
<td><input type="text" name="lastname" size="10"></td>
</tr>
<tr>
<td>Age:</td>
<td><input type="text" name="age" size="10"></td>
</tr>
<tr>
<td colspan=2><input type="submit" value="Submit">
</td>
</tr>
</table>
</form>