module pool

dear gurus plz help me

In a senario when i move from an I/O field to next I/O field , the value of First I/o required to be displayed in the current field .

Briefly

suppose i am moving from I/O fld-1 whose value i entered 25

when i Tab from I/O fld-1 to I/O fld -2 , I need the Value 25 should be displayed their automatically . I cannt use the enter key to populate that value , mns when i left the first I/O field , value should automatically be displayed in field2

Thanx