gistfile1.js

var c2t = paper.text(300, 130, "13.41");
c2t.hide();
var c2 = paper.circle(50,145,5);
c2.attr('fill', '#555');
c2.attr('stroke-width', 0);
c2.node.onmouseover = function() {
	c2t.show();
	c2.attr('stroke','#fff');
	c2.attr('stroke-width', 2);
}
c2.node.onmouseout = function() {
	c2t.hide();
	c2.attr('stroke-width', 0);
}