Handled validation on the Add Person/Add Visitor modal panel by placing a red border around the control if it should have something in it but doesn't. I tried using the built in "Required" property, but it puts text under the control stating the problem. Which is cool, but there just isn't room for that on the modal. There's got to be a better way than this though.

Added code to the Activity Select page to save the allergy/condition as a tag and to save the tag to the person. Also added the rptCondition_ItemCommand event and related code to add/remove the "active" class when the button is clicked.

Added some Javascript to the Activity Select page to allow the user to click outside the modal popup window to close it. Had to add the BehaviorId to the modal popup extenders so that the Javascript could find the correct modal window. Couldn't use the ID because that gets changed when Visual Studio renders the page.