For years, pundits and politicians have argued that government should be run like a business, tossing about terms like "zero-based and priority-based budgeting, and across-the-board cuts." What about bringing the process down a notch, and running it like a household budget: Setting aside a certain amount for expenses which must be covered, and cutting the luxuries in lean times?Douglas County officials are inviting the public to participate in the "budget challenge," an online program on the county's website that allows participants to try their hand at dispersing $500 among county services.The fictional $500 is only a fraction of the county's …