newby : pb with SVG and SMIL

Hello,

I am trying to build a svg file (source is enclosed)at end of message) that should have the following behavior :
if I click on one of the small rectangles, the circles move toward that rectangle, display a small animation then stay still.
However I observe  (with adobe plug-in)  the following :
The first time I click on the green rectangle, it's OK
If then I click on the yellow rectangle it's OK
But if I click (again) on the green one, it works well but after a second or so the other animation is fired too.

Can please somebody explain me where my mistake lies ? I would like to describe the animation "anim1" only once in the svg 
file, do I have to duplicate the code ?

please tell me also if I am not posting to the right forum, 

Anne
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20010904//EN"
"http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
<svg 
  xmlns="http://www.w3.org/2000/svg"
  xmlns:xlink="http://www.w3.org/1999/xlink"
  >
  <g
	 id="selection" transform="translate(47,33)"	>
	 <animateTransform id="anim_calend" attributeName="transform" attributeType="XML" 
		type="transform" to="117,33" fill="freeze" begin="indefinite" dur="0.10s" />
	 <animateTransform id="anim_home" attributeName="transform" attributeType="XML" 
		type="transform" to="47,33" fill="freeze" begin="indefinite" dur="0.10s" />
	 <g>
		<animateTransform id="anim1" attributeName="transform" attributeType="
		  XML"
		  type="scale" values="1,1;.9,.9;1,1;.5,.5;1,1"  additive="sum" fill="freeze" 
begin="anim_calend.end;anim_home.end" dur="1s" />
		<ellipse	
		  stroke="none" fill="#1e90ff"
		  cx="0" cy="0" rx="30" ry="30"/>
		<ellipse
		  stroke="none" fill="#0000ff"
		  cx="0" cy="0" rx="25" ry="25"/>
		<ellipse
		  stroke="none" fill="#86ceeb"
		  cx="0" cy="0" rx="18" ry="18"/>
	 </g>
  </g>
  <g>
	 <a xlink:href="#anim_home">
		<rect width="20" height="20" x="40" y="20" fill="yellow"/>
	 </a></g>
  <g>
	 <a xlink:href="#anim_calend">
		<rect width="20" height="20" x="110" y="20" fill="green"/>
	 </a>
  </g>
</svg>


------------------------------------------

Faites un voeu et puis Voila ! www.voila.fr