var glowShade = '#FFFFCC';

function glowRow(rowNum){
	document.getElementById('row' + rowNum).style.backgroundColor = glowShade;
}

function unGlowRow(rowNum){
	document.getElementById('row' + rowNum).style.backgroundColor = '';
}

function glowGrid(rowNum){
	document.getElementById('spot' + rowNum).style.backgroundColor = glowShade;
        glowImg('map' + rowNum);
}

function unGlowGrid(rowNum){
	document.getElementById('spot' + rowNum).style.backgroundColor = '';
        redoImg('map' + rowNum);
}
function glowImg(imgId){
	document.getElementById(imgId).style.visibility="visible";
}

function redoImg(imgId){
	document.getElementById(imgId).style.visibility="hidden";
}