function resetAcademicNav (hideThisArray, showThisArray) {
	for (i=0; i<hideThisArray.length; i++) {
		document.getElementById('acad_nav_2_id_'+hideThisArray[i]).style.visibility = 'hidden';
	}

	for (i=0; i<showThisArray.length; i++) {
		document.getElementById('acad_nav_2_id_'+showThisArray[i]).style.visibility = 'visible';
	}
}

function fadeImage(counter, imageArray) {
	var multiplier = 50;
	var delay = 200;

	document.getElementById('bottom_img').src = imageArray[counter];
	document.getElementById('top_div').style.visibility = 'hidden';
	counter++;
	if (counter == imageArray.length) {
		counter = 0;
	}
	document.getElementById('top_img').src = imageArray[counter];
	
	if (typeof document.getElementById('top_div').style.opacity != 'undefined') {
		// This section is for Firefox, Netscape, and other good browsers
		document.getElementById('top_div').style.opacity = 0;
		setTimeout('document.getElementById(\'top_div\').style.visibility = \'visible\';', delay);
		for (var i=0; i < multiplier; i++) {
			setTimeout('document.getElementById(\'top_div\').style.opacity = '+i+'/' + multiplier + ';', delay + i * multiplier);
		}
	} else {
		// This section is for IE
		if (document.getElementById('top_div').style.filter.indexOf("alpha") == -1) {
			// Attempt to preserve existing filters
			var existingFilters='';
			if (document.getElementById('top_div').style.filter) {
				existingFilters = document.getElementById('top_div').style.filter+' ';
			}
			document.getElementById('top_div').style.filter = existingFilters+"alpha(opacity="+this.opacity+")";
		}

		document.getElementById('top_div').style.filter['alpha'] = 'opacity = 0';
		setTimeout('document.getElementById(\'top_div\').style.visibility = \'visible\';', delay);
		for (var i=0; i < multiplier; i++) {
			setTimeout('document.getElementById(\'top_div\').style.filter = \'alpha(opacity = '+(i*100/multiplier)+'\';', delay + (i * multiplier));
		}
	}
	arrayString = '[';
	for (var i=0; i < imageArray.length; i++) {
		if (i != 0) {
			arrayString += ',';
		}
		arrayString += '\''+imageArray[i]+'\'';
	}
	arrayString += ']';
	setTimeout('fadeImage('+counter+', '+arrayString+')', 9000);
}

function startList() {
	if (document.all && document.getElementById) {
		navRoot = document.getElementById("nav");
		for (i = 0; i < navRoot.childNodes.length; i++) {
			node = navRoot.childNodes[i];
			if (node.nodeName == "LI") {
				node.onmouseover = function() {
					this.className += " over";
				}
				node.onmouseout = function() {
					this.className = this.className.replace(" over", "");
				}
			}
		}
	}
}