def resetbudget():
    ''' Replace current displayed budget with default from portfolio '''
    global globalportfolio, objectiveinputs
    totalbudget = 0
    for project in globalportfolio.projects.values():
        totalbudget += sum(project.progsets[0].getdefaultbudget().values())
    objectiveinputs['budget'].setText(str(totalbudget/budgetfactor))
    return None