Add increment decrement button to Magento quantity field in Cart

well its kinda cool to have increment decrement buttons for your qty field in cart view Maybe by the chance somebody tempt to increase the Qty . lol :)

all you need to do is open the file  : app/design/frontend/default/YOUR_TEMPLATE_NAME/template/checkout/cart/item/default.phtml

search code for this line :

change it with :

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you can chose yor favorte color by changing style="color:magenta to whatever you want
now we need to find these file : app/design/frontend/default/YOUR_TEMPLATE_NAME/template/checkout/cart.phtml
and add the following JS to end of the file :

there you go guys !!!!