Default option with empty value should still be tracked

Store the value of a select list if the initially selected option has an empty value. 

ASP .Net MVC Html helpers have an override for a dropdown list that will add an initial default option (Such as "Please select a value") When this is added though, its value is empty. Which allows for jquery validation to validate if the list is required) 

I believe areYouSure.js should store the original value of the select list even if it is an empty string and warn when there is a change.