title: How to integrate e-commerce or shopping cart into website without using a template?
body: <p>An associate of mine wants me to add simple e-commerce functionality into their website.  I have researched the possible solutions to this project for some time now and everything I have seen, including Magnento/osCommerce/BigCommerce/zendcart/etc., all seem to be storefronts and templates you have to style to look like your website. </p>
  
  <p>I do not wish to use the storefronts or templates which may or may not become difficult to style using CSS. I'm looking for some open source PHP solutions I can add into already existing website pages for instance My Bag, Add to Cart, etc; 
  I don't necessarily need fancier functions such as coupon redeeming and tax calculators especially if I can extend a current platform on my own. </p>
  
  <p>Is there any shopping cart solution I can use which will not force me into an entirely new template I'd have to further style?</p>