400nl- shovetime?

[Curryboy]

Villain has been fairly LAG since I sat down and Seat 5 has been very loose so I'm not giving him much credit for a hand, whats the best course of action?

Hand P4-49234054-372, Started at 04/09/2007 20:23 (EDT)
Table 'Lausanne': $4-$4 No Limit HE (Real)
Seat 0: irinailker1 ($400 in chips)
Seat 1: Villain ($114.50 in chips)
Seat 2: supermoto99 ($78.30 in chips)
Seat 4: ZinWyvern ($519.20 in chips)
Seat 5: Tekman69 ($310.10 in chips)
Seat 6: 71174 ($393.60 in chips) (on the button)
Seat 7: pastir888 ($396 in chips)
Seat 8: Hero ($403.80 in chips)
Seat 9: -DrTroy- ($947.85 in chips)
*** Blind Bet Round *** :
pastir888 : Post Blind ($2)
Hero : Post Blind ($4)
Dealt to Hero: Ad
Dealt to Hero: 4d
*** Pre-Flop *** :
-DrTroy- : Fold
irinailker1 : Fold
Villain : Bet ($10)
supermoto99 : Fold
ZinWyvern : Fold
Tekman69 : Call ($10)
71174 : Fold
pastir888 : Call ($8)
Villain : Call ($6)
*** Flop *** : Kd 3d 4c
pastir888 : Check
Hero : Check
Villain : Bet ($20)
Tekman69 : Call ($20)

Hero : ....