if (document.images) {
nextout = new Image
nexton = new Image

nextout.src = 'imgs/navigation/next.gif'
nexton.src = 'imgs/navigation/nexton.gif'

}
else {
nextout = " "
nexton = " "

document.next = " "
}


if (document.images) {
previousout = new Image
previouson = new Image

previousout.src = 'imgs/navigation/previous.gif'
previouson.src = 'imgs/navigation/previouson.gif'

}
else {
previousout = " "
previouson = " "

document.previous = " "
}