help required in Copy formula

I have a formula in Cell M3 as "IFERROR(VLOOKUP(A3,FORM5!A3:C13,3,0),VLOOKUP(A3,Entry!B9:J10,9,0))" .
When I copy the formula to Cell M4 the formula changes to "IFERROR(VLOOKUP(A4,FORM5!A4:C14,3,0),VLOOKUP(A4,Entry!B10:J11,9,0))".
I would like to have the table of array in formula A3:C13 and B9:J10 to remain constant while copying and only the look up A3 should change to A4.

This is required when i copy the formula horizontally to next column or vertically to next row

in cell M3

PHP Code: 

array in formula A3:C13 and B9:J10 to remain constant 


select a3 & press f4 this will insert the $ in front of a and 3 .
a represent column
3 represent row no

if u put $ sign infront of any of these 2 it will freeze that.


do it for all the reference which u want to maintain constant.


then copy paste into other cells.

Thanx a lot.. works perfect