function showOrHideInfo ( infoBox, backgroundBox, action, e ) {
	
	infoBox = document.getElementById(infoBox);
	backgroundBox = document.getElementById(backgroundBox);
	
	if (document.all) {
		infoBox.style.left = event.clientX + document.body.scrollLeft + 40;
		infoBox.style.top = event.clientY + document.body.scrollTop + 10;
	} else {
		infoBox.style.left = e.pageX + 40;
		infoBox.style.top = e.pageY - 80;
	}
	
	if (action=="show") {
		infoBox.style.visibility='visible'; 
		backgroundBox.style.visibility='visible';
	}
	
	if (action=="hide") {
		infoBox.style.visibility='hidden'; 
		backgroundBox.style.visibility='hidden';
	}
	
}