if (document.images) {
  logo = new Image
  rollOne = new Image
  rollTwo = new Image
  rollThree = new Image
  rollFour = new Image
  rollFive = new Image
  rollSix = new Image
  rollSeven = new Image
  rollEight = new Image

  rollOne.src="images/rollover_brewmasterdan.gif"
  rollTwo.src="images/rollover_scoopingmash.gif"
  logo.src="images/logo.gif"
  rollThree.src="images/rollover_bottlingday.gif"
  rollFour.src="images/rollover_tap.gif"
  rollFive.src="images/rollover_carriers.gif"
  rollSix.src="images/rollover_growler.gif"
  rollSeven.src="images/rollover_aboutus.gif"
  rollEight.src="images/rollover_troutgear.gif"
  }

function chgImg(imgField,newImg) {
  if (document.images) {
    document[imgField].src= eval(newImg + ".src")
    }
  }