posted 19 years ago
Either document.MaintainExactMultiple or document.MaintainExactMultiple.effectiveDate doesn't exist in that exact context. It's possible that checkDate doesn't exist either. It's hard to say without more code, but if all those objects/functions are on your page then you're not referencing them correctly. You need to check they're not contained in other objects, etc.
I would try putting your code in a function as it's a bit of a mouthful for a event attribute at the moment.
Jules