The demons of Halloween have barely had time to rest in peace before the spirit of Christmas has come barreling through the door.Downtown merchants are getting a head start down the chimney this weekend with a number of them taking part in a Christmas Open House. The promotion is set for this Friday and Saturday.“I need to get in my windows and get some Christmas decorations up,” said New 2U Consignment owner Diane Sanders on Tuesday morning. “I’m still recovering from the trick-or-treating on Friday.