function rollon(x){
		var div = document.getElementById(x);
		div.style.backgroundPositionY='-25px';
		div.style.backgroundPosition='0 -25px';
	}
	
function rollout(x){
		var div = document.getElementById(x);
		div.style.backgroundPositionY='0px';
		div.style.backgroundPosition='0 0px';
	}
	
function enlight(x,z){
	var y = document.getElementById(x);
	//y.setAttribute("class", "clear");
	y.className = z+" clear";
}

function dark(x,z){
	var y = document.getElementById(x);
	//y.setAttribute("class", "fade");
	y.className = z+" fade";
}