var imgSrc="/images/"
if(document.images){
	image1on=new Image()
	image1on.src=imgSrc+"services_over.gif"
	image2on=new Image()
	image2on.src=imgSrc+"projects_over.gif"
	image3on=new Image()
	image3on.src=imgSrc+"publications_over.gif"
	image4on=new Image()
	image4on.src=imgSrc+"software_over.gif"
	image5on=new Image()
	image5on.src=imgSrc+"staff_over.gif"
	image6on=new Image()
	image6on.src=imgSrc+"contact_over.gif"

	image1off=new Image()
	image1off.src=imgSrc+"services.gif"
	image2off=new Image()
	image2off.src=imgSrc+"projects.gif"
	image3off=new Image()
	image3off.src=imgSrc+"publications.gif"
	image4off=new Image()
	image4off.src=imgSrc+"software.gif"
	image5off=new Image()
	image5off.src=imgSrc+"staff.gif"
	image6off=new Image()
	image6off.src=imgSrc+"contact.gif"
}
function changeImages(){
	if(document.images){
		for(var i=0;i<changeImages.arguments.length;i+=2){
			document[changeImages.arguments[i]].src=eval(changeImages.arguments[i+1]+".src")
		}
	}
}