function chng_pic(pic_location,pic)
{
document[pic_location].src=pic
}

img1=new Image()
img1.src='../images/contact1.gif'
img2=new Image()
img2.src='../images/support1.gif'
img3=new Image()
img3.src='../images/downloads1.gif'
img4=new Image()
img4.src='../images/sitemap1.gif'

innerimg1=new Image()
innerimg1.src='../images1/contact1.gif'
innerimg2=new Image()
innerimg2.src='../images1/support1.gif'
innerimg3=new Image()
innerimg3.src='../images1/downloads1.gif'
innerimg4=new Image()
innerimg4.src='../images1/sitemap1.gif'