ASP.Net/ SQL Website Needs Javascript Calendar Work

Please note - all work on the following project MUST be completed on the website this project resides on - NOT a different site (if this is a problem, please don't bid). You'll have full FTP access and SQL database access as this is a test site. I have an ASP.NET site using a SQL Server db. Here's what I need: 1) There is a page for record entries, one of the items needed is the date of the transaction being entered. I have a javascript calendar extender that I wish to use to help users add a date entry. Because I am using a master/child page configuration, for some reason I can't get the calendar to enter the date into the textbox. 2) On another page, when a user wants to call up records to be displayed in a gridview, there are three different criteria that are necessary to filter the records. I have two of the criteria (checkboxes) working fine. However, the third required filtering item would be start date and end date. I need someone who can put together the necessary code for this filtering. As in #1, a calendar extender is being used, so the two problems are kind of related. I would expect that someone that knows what they are doing can knock this out in an hour or two - but you be the judge. Thank you for your interest.