Epicor Runtime Error: Object Expected

Greetings, Salutations, Etc.

I have a calendar function (js) running on a parameter page (html) that refines the results of a report in Crystal Reports. It populates a field on the page when a date is selected. All page funtions operate smoothly in Crystal Reports and as a separate html document. But, (here's the kicker) I get a runtime error (error: object expected) when attempting to run and refine the report from within Epicor's Vantage software. Please advise and thanks in advance.