if (document.images) {
				d_active = new Image
				d_intro = new Image
				c_active = new Image
				c_intro = new Image

				d_active.src = "img/intro_design_a.gif"
				d_intro.src = "img/intro_design.gif"
				c_active.src = "img/intro_communications_a.gif"
				c_intro.src = "img/intro_communications.gif"
			}

			function swapImage(thisImage,newImage) {
				if (document.images) {
					document[thisImage].src = eval(newImage + ".src")
				}
			}