Making Attributes a must

[chrisnet247]

Hi All

I have two attribute drop down menus for my customers to choose from. The first is colour and the second sizes. I also have an option in each "Please Choose", however some of my customers are not choosing the attribute and the default comes through on their order.

Is there a way to force the customer to choose attributes? for example a JavaScript that will warn the customer that they have not choosen a a size or colour and to please choose?

Thanks in advance