Online form (you can choose technology)

Hello, I have uploaded the form here. Please take a minute to review: [login to view URL] You should see the form divided in sections, so I will go one section at a time. 1. "Your Information" section - I would like to make all of the fields mandatory. If a user has not entered a their information, then I would like to have custom error message for each field (e.g. "You did not enter your name" - For the "Country" field, there is an option between "US" and "Canada". I would like this to act as a filter for the next field "Office". So, for example, if a user selects "Canada", then I would like "Beaver Creek" and "University Ave. (Toronto) to load inside of the "Office" field. 2. Day(s) Required: - I'm not crazy about the way I set this up. You will see five rows for Date, Time and # hours. Is there a way to set this up where we would have only one row, and for the date, we can give the user the option to choose multiple days from a calendar or something? If not, then we can keep the current set up, and have the date populate from a calendar. The calendar would show up when user click the calendar icon. - There are three components (date, time and # hours), so a validation error need to be handled for each (e.g. you did not enter the # of hours) 3. Equipment and type of training section - I need validation that check if at least one of the options is selected. If not, then I need the error message to indicate that (e.g. You must select at least one type of equipment) 4. The textboxes are optional. What I would like to do when users click "Submit" is send this information via email. To who the form is sent depends on what is chosen in the "Office" field. So, for example, if a user chooses "Beaver Creek", then an email would be sent to 3[at]hotmail[dot]com, 4[at]hotmail[dot]com and 5[at]hotmail[dot]com. Can this be sent in html format? Please let me know what language/technology you will be using (e.g javascript, asp etc...). No php or database use please. I have uploaded the html file. Many thanks