function swap(which, to) {
	theImg = document.getElementById(which);
	theImg.setAttribute("src", to);
}

function mouseOverCell(cell) {
	cell.style.backgroundColor = '333333';
	cell.style.cursor = 'hand';
}

function mouseOutCell(cell) {
	cell.style.backgroundColor = '797979';
}

function mouseOverText(text,colour) {
	text.style.color = colour;
	text.style.cursor = 'hand';
}

function mouseOutText(text,colour) {
	text.style.color = colour;
}