home = new Image();
  home.src = "images/home.gif";
  home_over = new Image();
  home_over.src = "images/home_over.gif";
micro = new Image();
  micro.src = "images/micro.gif";
  micro_over = new Image();
  micro_over.src = "images/micro_over.gif";
sizes = new Image();
  sizes.src = "images/sizes.gif";
  sizes_over = new Image();
  sizes_over.src = "images/sizes_over.gif";
tested = new Image();
  tested.src = "images/tested.gif";
  tested_over = new Image();
  tested_over.src = "images/tested_over.gif";
varieties = new Image();
  varieties.src = "images/varieties.gif";
  varieties_over = new Image();
  varieties_over.src = "images/varieties_over.gif";
about = new Image();
  about.src = "images/about.gif";
  about_over = new Image();
  about_over.src = "images/about_over.gif";



//Code for image rollovers for IE4+
function changeImages() {
	if (document.images) {
    	for (var i=0; i<changeImages.arguments.length; i+=3) {
    	document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
    	}
	}
}

function button_swap(imagename,objectsrc) {
	document.images[imagename].src=eval(objectsrc+".src")
}