var napsterusages;
var napsterBaloon;

function napsterlinkset(){
	napsterusages = document.getElementsByClassName("napsterlink-usage");
	napsterBaloon = $("napsterlink-usage");
	napsterusages.each(
		function(_obj){
			Event.observe(_obj, "mouseover", napsteropen, false);
			Event.observe(_obj, "click", napsterswitch, false);
		}
	);
}

function napsteropen(){
	napsterBaloon.style.visibility = 'visible';
}
function napsterswitch(){
	if(napsterBaloon.style.visibility == 'visible'){
		napsterBaloon.style.visibility = 'hidden';
	} else {
		napsterBaloon.style.visibility = 'visible';
	}
}

Event.observe(window, "load", napsterlinkset, false);