if (document.images) {

	img1on = new Image();

		img1on.src = "images/nav/home_on.gif";

	img2on = new Image();

		img2on.src = "images/nav/overview_on.gif";

	img3on = new Image();

		img3on.src = "images/nav/scope_on.gif";
		
	img4on = new Image();

		img4on.src = "images/nav/experience_on.gif";
		
	img5on = new Image();

		img5on.src = "images/nav/principals_on.gif";

	img6on = new Image();

		img6on.src = "images/nav/appraisals_on.gif";
		
	img7on = new Image();

		img7on.src = "images/nav/casestudies_on.gif";
		
	img8on = new Image();

		img8on.src = "images/nav/media_on.gif";
		
	
		
	
	
	
	img1off = new Image();

		img1off.src = "images/nav/home_off.gif";

	img2off = new Image();

		img2off.src = "images/nav/overview_off.gif";

	img3off = new Image();

		img3off.src = "images/nav/scope_off.gif";
		
	img4off = new Image();

		img4off.src = "images/nav/experience_off.gif";
		
	img5off = new Image();

		img5off.src = "images/nav/principals_off.gif";

	img6off = new Image();

		img6off.src = "images/nav/appraisals_off.gif";
	
		
	img7off = new Image();

		img7off.src = "images/nav/casestudies_off.gif";
		
	img8off = new Image();

		img8off.src = "images/nav/media_off.gif";
		

	
		
	
	}



// Function to 'activate' images.

function imgOn(imgName){

	if (document.images){

		document[imgName].src = eval(imgName + "on.src");

		}

	}



// Function to 'deactivate' images.

function imgOff(imgName){

	if (document.images){

		document[imgName].src = eval(imgName + "off.src");

		}

	}

// -->