Animation II

The JavaScript code

brd = JXG.JSXGraph.initBoard('jxgbox',{boundingbox:[-2,2,2,-2], keepaspectratio:true, axis:true});
p = brd.createElement('point',[1.5,1.5],{face:'o', size:8, strokeColor:'red', fillOpacity:0.6, strokeOpacity: 0.6});