if (document.images) {
var img1on = new Image (150,50)
img1on.src = "images/welkomon.gif";
var img2on = new Image (150,50)
img2on.src = "images/praktijkon.gif";
var img3on = new Image (150,50)
img3on.src = "images/consultenon.gif";
var img4on = new Image (150,50)
img4on.src = "images/productenon.gif";
var img5on = new Image (150,50)
img5on.src = "images/nieuwson.gif";
var img6on = new Image (150,50)
img6on.src = "images/linkson.gif";

var img1off = new Image (150,50)
img1off.src = "images/welkomoff.gif";
var img2off = new Image (150,50)
img2off.src = "images/praktijkoff.gif";
var img3off = new Image (150,50)
img3off.src = "images/consultenoff.gif";
var img4off = new Image (150,50)
img4off.src = "images/productenoff.gif";
var img5off = new Image (150,50)
img5off.src = "images/nieuwsoff.gif";
var img6off = new Image (150,50)
img6off.src = "images/linksoff.gif";

var img1banner = new Image (160,120)
img1banner.src = "images/welkombanner.gif";
var img2banner = new Image (160,120)
img2banner.src = "images/praktijkbanner.gif";
var img3banner = new Image (160,120)
img3banner.src = "images/consultenbanner.gif";
var img4banner = new Image (160,120)
img4banner.src = "images/productenbanner.gif";
var img5banner = new Image (160,120)
img5banner.src = "images/nieuwsbanner.gif";
var img6banner = new Image (160,120)
img6banner.src = "images/linksbanner.gif";
}

function imgOn (imgName){
	if (document.images) {
	document.images[imgName].src = eval (imgName + "on.src")
	document.banner.src = eval (imgName + "banner.src")
	}
}
function imgOff (imgName) {
	if (document.images) {
	document.images[imgName].src = eval (imgName + "off.src")
	document.banner.src = "images/praktijkbanner.gif"
	}
}