Can't set a class method as a click handler

main_menu.coffee

class MainMenu

	interviewEditor = null

	highlight: (menuId) ->
		$('#main_menu li').removeClass('active_menu_item')
		$("#main_menu li##{menuId}").addClass('active_menu_item')
		
	clearContentArea: () ->
		$('div#content').children().remove()

	menuClickCallback: (event) ->
		event.preventDefault()
		@highlight event.data.menuId
		@clearContentArea()
		event.data.callback()
	
	setup: () ->
		interviewEditor = new InterviewEditor
		$('#main_menu li#next_interview a').bind 'click',
			{ callback: nextInterview, menuId: '#next_interview' },
			@menuClickCallback
		$('#main_menu li#manage_interviews a').bind 'click',
			{ callback: manageInterviews, menuId: '#manage_interviews' },
			=> @menuClickCallback
		$('#main_menu li#setup_interview a').bind 'click',
			{ callback: interviewEditor.setupInterview, menuId: '#setup_interview' },
			(event) -> @menuClickCallback
		$('#main_menu li#manage_account a').bind 'click',
			{ callback: manageAccount, menuId: '#manage_account' },
			(event) => @menuClickCallback
		$('#main_menu li#manage_interviews a').click()

I try to set menuClickCallback as a click handler in 4 different ways.

Line 22 is the only one where menuClickCallback actually gets called but it can't call @highlight or @clearContentArea.
It results in:
TypeError: Result of expression 'this.highlight' [undefined] is not a function.