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In HTML u can find tag iframe (inline frame)
Then somebody hit's a button in input, iframe changes it's location with variable equal to ur input text. Some script in a server side searching in a database or in a file ur text and returns to iframe needed variables.
Then iframe.onload event fires. u copy it to ur variable and show it below ur text input field) that's all)
Never mind there u search or there u put it) the mechanizm is follows)