var stayLit;

function stayHighlight( cell ){
	stayLit=cell;
	highlighter(cell);
}

function stayHighlightTop( cell ){
	stayLit=cell;
	highlighterTop(cell);
}

function highlighter( cell ){
	cell.className="highlight";
	}	
	
function nohighlighter( cell ){
	if(cell != stayLit)
		cell.className="unhighlight";
	}

function highlighterTop( cell ){
	cell.className="highlightTop";
	}	
	
function nohighlighterTop( cell ){
	if(cell != stayLit)
		cell.className="unhighlightTop";
	}