After Read Barcode focus on another textbox

Hi ,
Read Barcode in Barcode textbox(Textbox1) after that its automatically focus on next textbox(TextBox2)
My requirment is very basics things . but its not working .... :(
I had tried many ways (onFocusout OnKeyUp , keypress.......... )but not working. (Condition : No Tab, its automatically focus on another textbox) ... Guide me friends .........

Barcode : Textbox1
TimeStamp : TextBox2

Thanks and Regards,
Emmi