var num=1
img1 = new Image ()
img1.src = "images/art_image01.jpg"
img2 = new Image ()
img2.src = "images/art_image02.jpg"
img3 = new Image ()
img3.src = "images/art_image03.jpg"
img4 = new Image ()
img4.src = "images/art_image04.jpg"
img5 = new Image ()
img5.src = "images/art_image05.jpg"
img6 = new Image ()
img6.src = "images/art_image06.jpg"
img7 = new Image ()
img7.src = "images/art_image07.jpg"
img8 = new Image ()
img8.src = "images/art_image08.jpg"

function slideshowUp()
{
num=num+1
if (num==9)
{num=1}
document.scrollpic.src=eval("img"+num+".src")
}

function slideshowBack()
{
num=num-1
if (num==0)
{num=8}
document.scrollpic.src=eval("img"+num+".src")
}