if (document.images)
	{

	bio_off = new Image();
	bio_off.src = "images/global/nav/bio_off.gif";

	bio_on = new Image();
	bio_on.src = "images/global/nav/bio_on.gif";

	books_off = new Image();
	books_off.src = "images/global/nav/books_off.gif";

	books_on = new Image();
	books_on.src = "images/global/nav/books_on.gif";

	columns_off = new Image();
	columns_off.src = "images/global/nav/columns_off.gif";

	columns_on = new Image();
	columns_on.src = "images/global/nav/columns_on.gif";

	contact_off = new Image();
	contact_off.src = "images/global/nav/contact_off.gif";

	contact_on = new Image();
	contact_on.src = "images/global/nav/contact_on.gif";

	home_off = new Image();
	home_off.src = "images/global/nav/home_off.gif";

	home_on = new Image();
	home_on.src = "images/global/nav/home_on.gif";

	links_off = new Image();
	links_off.src = "images/global/nav/links_off.gif";

	links_on = new Image();
	links_on.src = "images/global/nav/links_on.gif";


	reviews_off = new Image();
	reviews_off.src = "images/global/nav/reviews_off.gif";

	reviews_on = new Image();
	reviews_on.src = "images/global/nav/reviews_on.gif";



	};

function roll(whichone, turnon)
	{		
	var direction = ( turnon ) ? "_on" : "_off";
	var navElement = eval(whichone + direction + ".src");
	document.images[whichone].src = navElement;
	}

function navigate(section)
	{
	var whichNum=section.selectedIndex;
	var link=section.options[whichNum].value;
	if (link != "") { top.location = link; }
	}