For All the LAZY ASS people like me, Here is an instructable that my kind of people are surely gonna love.

The AUTOMATIC DOOR CLOSING MECHANISM.

so the next time when someone comes to see you, you do not have to bear the trouble of getting up, walking a few steps to the door, just to shut it. :D

Step 1: Apparatus Required :

Well, You wouldn't be required to spend even a penny for this.

And that is where my speciality lies in ;D

All you need is some weight. I Used 2 X 500 ml water bottles filled to the brim. You can use a single one litre bottle, or two bottles and that is totally upto you. All you need is a Dead Weight.

Secondly, To tie it, you need something . It Can be anything varying from a yarn fibre to nylon ropes. I have used Nylon Ropes in here.

And that is All :D

Step 2: The Procedure:

Wind the rope around your selected Weight (Bottles, in my case) tightly.

Since the weight will be disturbed frequently by the opening and closing of the door, it should be tightly wound so that it does not get loose and falls down. One end of the rope would be used here.

Let the other end of the rope occupy the panel above the door you want to close. again take care of the tension you maintain and it should be tightly wound.

Position the setup as per your convenience. In my case, i have taken the latch in my way so that the rope doesn't move much even when the door is fully opened.

and now, Your AUTOMATIC DOOR CLOSING MECHANISM is good and ready to use.

PS: Do vote me for much more awesome hacks ;D