where is the prob.?

using MS Visual Studio 2005 vb.net as page language
and "System.Web.UI.MobileControls"
and i have two pages login.aspx and chat.aspx
i need to get data transfered from one page to another
ok i done it
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Code:

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dim IdNum as integer

Context.Items.Add("first", IdNum)
Server.Transfer("chat.aspx")

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really i get the value of the IdNum in the chat.aspx page
but the problem is when i call the sub ColorMyName Which have the operations on the IdNum field it always called 2 times
and i dont know why?
in the first time i get the data that i need
the second time the sub called automaticaly makes this data lost
any one have an idea


in the chat.aspx

Code:

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IdNum = Context.Items("first")

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Code:

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<mobile:Label id="lblUserName" Runat="server" onclick="ColorMyName ">

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