Image zoom slider issue in product page in Magento when using Safari

Image zoom slider issue in product page in Magento when using Safari

By default, Magento creates a zoom slider and buttons when you add an
image for the product. Now, the zoom function works great in Google Chrome
and Mozilla Firefox.
However, when I try to access the website using Safari and open a product.
The zoom buttons work but the slider doesn't. Usually, if you drag the
slider, the image should zoom in or out but it doesn't. In fact, the
slider doesn't work at all. Is this a bug? How can I fix address this
problem? Please advice.
I'm not sure if this is a factor, I currently have version 6 of Safari