homeR = new Image
yearbookR = new Image
ruplanR = new Image
ruphotoR = new Image
rustoryR = new Image
oldTHR = new Image
btowerR = new Image
otlinkR = new Image
choirR = new Image
addrUpdateR = new Image

homeB = new Image
yearbookB = new Image
ruplanB = new Image
ruphotoB = new Image
rustoryB = new Image
oldTHB = new Image
btowerB = new Image
otlinkB = new Image
choirB = new Image
addrUpdateB = new Image

homeR.src = "ImageNav/NavHome.gif"
yearbookR.src = "ImageNav/NavYearbook.gif"
ruplanR.src = "ImageNav/NavRUplan.gif"
ruphotoR.src = "ImageNav/NavRUphoto.gif"
rustoryR.src = "ImageNav/NavRUstory.gif"
oldTHR.src = "ImageNav/NavOldTH.gif"
otlinkR.src = "ImageNav/NavOTlinks.gif"
btowerR.src = "ImageNav/NavBTower.gif"
choirR.src = "ImageNav/NavChoir.gif"
addrUpdateR.src = "ImageNav/NavAddrUpdate.gif"

homeB.src = "ImageNav/NavHomeB.gif"
yearbookB.src = "ImageNav/NavYearbookB.gif"
ruplanB.src = "ImageNav/NavRUplanB.gif"
ruphotoB.src = "ImageNav/NavRUphotoB.gif"
rustoryB.src = "ImageNav/NavRUstoryB.gif"
oldTHB.src = "ImageNav/NavOldTHB.gif"
otlinkB.src = "ImageNav/NavOTlinksB.gif"
btowerB.src = "ImageNav/NavBTowerB.gif"
choirB.src = "ImageNav/NavChoirB.gif"
addrUpdateB.src = "ImageNav/NavAddrUpdateB.gif"

function mOver(thisLink) {
  switch (thisLink) {
   case "home":
     document[thisLink].src = homeB.src
     break
   case "yearbook":
     document[thisLink].src = yearbookB.src
     break
   case "ruplan":
     document[thisLink].src = ruplanB.src
     break
   case "ruphoto":
     document[thisLink].src = ruphotoB.src
     break
   case "rustory":
     document[thisLink].src = rustoryB.src
     break
   case "oldTH":
     document[thisLink].src = oldTHB.src
     break
   case "OTlinks":
     document[thisLink].src = otlinkB.src
     break
   case "btower":
     document[thisLink].src = btowerB.src
     break
   case "choir":
     document[thisLink].src = choirB.src
     break
   case "AddrUpdate":
     document[thisLink].src = addrUpdateB.src
     break
  }
}

function mOut(thisLink) {
  switch (thisLink) {
   case "home":
     document[thisLink].src = homeR.src
     break
   case "yearbook":
     document[thisLink].src = yearbookR.src
     break
   case "ruplan":
     document[thisLink].src = ruplanR.src
     break
   case "ruphoto":
     document[thisLink].src = ruphotoR.src
     break
   case "rustory":
     document[thisLink].src = rustoryR.src
     break
   case "oldTH":
     document[thisLink].src = oldTHR.src
     break
   case "OTlinks":
     document[thisLink].src = otlinkR.src
     break
   case "btower":
     document[thisLink].src = btowerR.src
     break
   case "choir":
     document[thisLink].src = choirR.src
     break
   case "AddrUpdate":
     document[thisLink].src = addrUpdateR.src
     break
  }
}