//change background to #cccccc
function lightBg(id){
	id.style.backgroundColor = "transparent";
	id.style.borderStyle = "solid";
	id.style.borderColor = "cccccc";
	id.style.borderWidth = "0px";
}

//change background to #aaaaaa
function darkBg(id){
	id.style.backgroundColor = "#aaaaaa";
	id.style.borderColor = "black";
	id.style.borderStyle = "solid";
	id.style.borderWidth = "0px";
}