function chess () {
	
	var contentDiv = document.getElementById('content');
	var contentHeight = contentDiv.offsetHeight;
	var leftDiv = document.getElementById('navigate');
	var pushDown = contentHeight - 297;
	if (contentHeight <= 297) {
		leftDiv.style.paddingBottom = '1000px';
	} else {
	leftDiv.style.paddingBottom = pushDown + 'px';
	}
}