Edit in JSFiddle

window.onload = function () {
    
    //create paper
    var paper = Raphael(0,0,200,300);

    //Draw Circle
    paper.ellipse(150,50,25,50);    
    paper.ellipse(50,50,50,25);
    paper.ellipse(150,150,50,25);    
    paper.ellipse(50,150,25,50);
    
    paper.ellipse(100,100,80,80);
    
}

<div id="canvas"></div>

body,html
{
    height:100%;
    margin:0;
}

#canvas 
{
    height:100%;
    background:#aaa;
}