function checkBox(id) {
if (document.getElementById('remember' + id).value == 'off') {
document.getElementById('img' + id).src = 'images/true.png'; //change the image
document.getElementById('remember' + id).value = 'on'; //change the field value
} else {
document.getElementById('img' + id).src = 'images/false.png'; //change the image
document.getElementById('remember' + id).value = 'off'; //change the field value
}
} 

function hoverCell(id) {
	var cellClassName = document.getElementById(id).className;
	document.getElementById(id).className = cellClassName + 'Hover';
	var shadowid = id.replace(/cell/gi,'shadow');
	var shadowClassName = document.getElementById(shadowid).className;
	document.getElementById(shadowid).className = shadowClassName + 'Hover';
}
function mOutCell(id) {
	var cellClassName = document.getElementById(id).className;
	document.getElementById(id).className = cellClassName.replace(/Hover/gi,'');
	var shadowid = id.replace(/cell/gi,'shadow');
	var shadowClassName = document.getElementById(shadowid).className;
	document.getElementById(shadowid).className = shadowClassName.replace(/Hover/gi,'');
}