var num=1
function slideshowUp()
{

img1 = new Image ()
img1.src = "images/p1.jpg"
img2 = new Image ()
img2.src = "images/p2.jpg"
img3 = new Image ()
img3.src = "images/p3.jpg"
img4 = new Image ()
img4.src = "images/p4.jpg"
img5 = new Image ()
img5.src = "images/p5.jpg"
img6 = new Image ()
img6.src = "images/p7.jpg"
img7 = new Image ()
img7.src = "images/p6.jpg"
num=num+1
if (num==8)
{num=1}
document.yourpic.src=eval("img"+num+".src")

}