if (document.images) {
harrowmoff = new Image
harrowmkoff = new Image
marrowoff = new Image
mkarrowoff = new Image
maparrowoff = new Image
farrowoff = new Image

harrowmon = new Image
harrowmkon = new Image
marrowon = new Image
mkarrowon = new Image
maparrowon = new Image
farrowon = new Image

harrowmoff.src = "images/harrowm.jpg"
harrowmkoff.src = "images/harrowmk.jpg"
marrowoff.src = "images/marrow.png"
mkarrowoff.src = "images/mkarrow.png"
maparrowoff.src = "images/maparrow.png"
farrowoff.src = "images/farrow.png"

harrowmon.src = "images/harrowm_r.jpg"
harrowmkon.src = "images/harrowmk_r.jpg"
marrowon.src = "images/marrow_r.png"
mkarrowon.src = "images/mkarrow_r.png"
maparrowon.src = "images/maparrow_r.png"
farrowon.src = "images/farrow_r.png"

}
else {

harrowmoff =  " "
harrowmkoff =  " "
marrowoff =  " "
mkarrowoff =  " "
maparrowoff =  " "
farrowoff =  " "

harrowmon =  " "
harrowmkon =  " "
marrowon =  " "
mkarrowon =  " "
maparrowon =  " "
farrowon =  " "

document.harrowm =  " "
document.harrowmk =  " "
document.marrow =  " "
document.mkarrow =  " "
document.maparrow =  " "
document.farrow =  " "

}