// BEGIN IMAGE SWAP CODE

// image swap, on state
function imgOn(imgName) {
	if(document.images)
		document [imgName].src = eval(imgName + '_on.src');
}

// image swap, off state
function imgOff(imgName) {
	if(document.images)
		document [imgName].src = eval(imgName + '_off.src');
}	

// preload images

nav_image1_on = new Image(); nav_image1_on.src = "images/about_on.gif"
nav_image1_off = new Image(); nav_image1_off.src = "images/about_off.gif"
nav_image2_on = new Image(); nav_image2_on.src = "images/biography_on.gif"
nav_image2_off = new Image(); nav_image2_off.src = "images/biography_off.gif"
nav_image3_on = new Image(); nav_image3_on.src = "images/audio_on.gif"
nav_image3_off = new Image(); nav_image3_off.src = "images/audio_off.gif"
nav_image4_on = new Image(); nav_image4_on.src = "images/video_on.gif"
nav_image4_off = new Image(); nav_image4_off.src = "images/video_off.gif"
nav_image5_on = new Image(); nav_image5_on.src = "images/photographs_on.gif"
nav_image5_off = new Image(); nav_image5_off.src = "images/photographs_off.gif"
nav_image6_on = new Image(); nav_image6_on.src = "images/writing_on.gif"
nav_image6_off = new Image(); nav_image6_off.src = "images/writing_off.gif"
nav_image7_on = new Image(); nav_image7_on.src = "images/others_on.gif"
nav_image7_off = new Image(); nav_image7_off.src = "images/others_off.gif"
nav_image8_on = new Image(); nav_image8_on.src = "images/links_on.gif"
nav_image8_off = new Image(); nav_image8_off.src = "images/links_off.gif"