<SVG>
<circle fill="blue" cx="30" cy="30" r="30"></circle>
</SVG>
svg{
height:100%;
width:80%;
border: 3px solid brown;
}
$(document).mousemove(sitioCirculo);
function sitioCirculo(e){
$("svg>circle").css({"cx" : e.clientX });
$("svg>circle").css({"cy": e.clientY });
}
This Pen doesn't use any external CSS resources.