function toggle_visibility(id) {
	var e = document.getElementById(id);
	if(e.style.display == 'none')
	e.style.display = 'block';
	else
	e.style.display = 'none';
}
function toggle_classTop(id) {
	var place = 'top';
	for(var i=1; i<7; i++){
		var k = document.getElementById(place+i);
		if(k.className == 'topLight')
		k.className = 'topDark';
	}
	var g = document.getElementById(id);
	if(g.className == 'topLight')
	g.className = 'topDark';
	else
	g.className = 'topLight';
}
function toggle_spanTop(id) {
	var place = 'topWords';
	for(var i=1; i<7; i++){
		var k = document.getElementById(place+i);
		if(k.className == 'topLightWords')
		k.className = 'topDarkWords';
	}
	var h = document.getElementById(id);
	if(h.className == 'topLightWords')
	h.className = 'topDarkWords';
	else
	h.className = 'topLightWords';
}
function toggle_classBottom(id) {
	var place = 'bottom';
	for(var i=1; i<8; i++){
		var k = document.getElementById(place+i);
		if(k.className == 'bottomLight')
		k.className = 'bottomDark';
	}
	var g = document.getElementById(id);
	if(g.className == 'bottomLight')
	g.className = 'bottomDark';
	else
	g.className = 'bottomLight';
}
function toggle_spanBottom(id) {
	var place = 'bottomWords';
	for(var i=1; i<8; i++){
		var k = document.getElementById(place+i);
		if(k.className == 'bottomLightWords')
		k.className = 'bottomDarkWords';
	}
	var h = document.getElementById(id);
	if(h.className == 'bottomLightWords')
	h.className = 'bottomDarkWords';
	else
	h.className = 'bottomLightWords';
}
function toggle_topLink(num) {
	var place = 'top';
	for(var i=1; i<7; i++){
		var k = document.getElementById(place+i);
		if(k.innerHTML == '<a href="javascript:displaydivTop(\'1' + num + '\');" onClick="toggle_classTop(\'' + place + num + '\'); toggle_spanTop(\'' + place + 'Words' + num + '\'); hideOne(\'' + place + 'Tabs\')"><span id="' + place + 'Words' + num + '" class="' + place + 'DarkWords">Ph.D. Recruitment<\/span><\/a>')
		k.innerHTML = 'Ph.D. Recruitment';
	}
	//var h = document.getElementById(id);
	//if(h.className == 'bottomLightWords')
	//h.className = 'bottomDarkWords';
	//else
	//h.className = 'bottomLightWords';
}