function showArrow(oId) { 
	if (typeof onId == 'undefined') { 
		onId = 0;
	}
	if (oId != onId) { 
		document.getElementById("upNav" + oId).src = "images/arrow.gif";
	}
}

function hideArrow(oId) { 
	if (typeof onId == 'undefined') { 
		onId = 0;
	}
	if (oId != onId) { 
		document.getElementById("upNav" + oId).src = "images/spacer.gif";
	}
}

function showProj() {
	document.getElementById("projShow").style.display = "none";
	document.getElementById("projSection").style.display = "block";
}

function hideProj() {
	document.getElementById("projShow").style.display = "block";
	document.getElementById("projSection").style.display = "none";
}