function imgSwap(ImgName, ImgObject) {
    document.images[ImgName].src = eval(ImgObject + ".src")
	}
	
	
	// preload regular images
	var startoff = new Image(55, 40)
	startoff.src = "/images/start_off.gif"

	var designoff = new Image(55, 40)
	designoff.src = "/images/design_off.gif"
	
	var blogoff = new Image(55, 40)
	blogoff.src = "/images/blog_off.gif"
	
	var bostonoff = new Image(55, 40)
	bostonoff.src = "/images/boston_off.gif"
	
	var biooff = new Image(55, 40)
	biooff.src = "/images/bio_off.gif"
	

	
	// preload rollover images
	var starton = new Image(55, 40)
	starton.src = "/images/start_on.gif"

	var designon = new Image(55, 40)
	designon.src = "/images/design_on.gif"
	
	var blogon = new Image(55, 40)
	blogon.src = "/images/blog_on.gif"
	
	var bostonon = new Image(55, 40)
	bostonon.src = "/images/boston_on.gif"
	
	var bioon = new Image(55, 40)
	bioon.src = "/images/bio_on.gif"