Textbox value not captured in IE but works in Firefox and Chrome

Maybe someone can help: I have made a simple form and went to test if the input is being captured from a textboxby displaying it back to a Label. It works in Firefox and Chrome ut not in IE8 or IE7. From code behind in C#______________________________________________________________ protected void LinkButton1_Click(object sender, EventArgs e) { Label2.Text =TextBoxFName.Text; }
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From aspx :

<p> <asp:Label ID ...