Amaya wrongly report errors

Hi,
 
Part of the script below is giving errors but I don't think they are
(copied from Batik script 'sydney.svg' and modified for own purpose).
 
Paul.
 
*** Errors/warnings in
G:\eclipse\workspace\nl.itis.mda.itisuml\samples\MyFirstSVG\ItisUML.svg
  line 146, char 3: Invalid or unsupported SVG element <filter>
  line 147, char 7: Invalid or unsupported SVG element <feMorphology>
  line 148, char 7: Invalid or unsupported SVG element <feGaussianBlur>
  line 149, char 7: Invalid or unsupported SVG element <feOffset>
  line 150, char 7: Invalid or unsupported SVG element
<feComponentTransfer>
  line 151, char 10: Invalid or unsupported SVG element <feFuncA>
  line 153, char 7: Invalid or unsupported SVG element <feComposite>
  line 174, char 4: Invalid or unsupported SVG attribute
"pointer-events"
  line 174, char 4: Invalid or unsupported SVG attribute "onmousedown"
  line 174, char 4: Invalid or unsupported SVG attribute "onmouseup"
  line 174, char 4: Invalid or unsupported SVG attribute "onmousemove"
  line 180, char 4: Invalid or unsupported SVG attribute "name"
  line 180, char 4: Invalid or unsupported SVG attribute "onmousedown"
  line 180, char 4: Invalid or unsupported SVG attribute "onmouseup"
  line 180, char 4: Invalid or unsupported SVG attribute "onmousemove"
  line 180, char 4: Invalid or unsupported SVG attribute "onmouseover"
  line 194, char 3: Invalid or unsupported SVG attribute "visibility"
  line 194, char 3: Invalid or unsupported SVG attribute "onmousedown"
  line 194, char 3: Invalid or unsupported SVG attribute "onmouseup"
  line 194, char 3: Invalid or unsupported SVG attribute "onmousemove"
  line 198: Invalid color value "darkgrey"
 
 
   <filter id="merge"  filterUnits="objectBoundingBox" >
       <feMorphology operator="dilate" radius="10" in="SourceAlpha" />
       <feGaussianBlur stdDeviation="4" /> 
       <feOffset dx="3" dy="3"/>
       <feComponentTransfer result="shadow">
          <feFuncA type="linear" slope=".6" intercept="0" />
       </feComponentTransfer>
       <feComposite operator="over" in="SourceGraphic" in2="shadow"/>
   </filter>
 
    <rect fill="#88A" x="0%" y="0%" width="100%" height="100%"/>
    <text x="302" y="47" font-size="24" fill="#448"
        >Click and drag to move images</text>
    <text x="300" y="45" font-size="24" fill="white"
        >Click and drag to move images</text>
    
    <defs>    
  <symbol id="auto">
   <rect x="0%" y="0%" width="100%" height="100%"/>
   <text x="5" y="25" font-size="24" stroke="white"
fill="white">getAuto</text>
  </symbol>
 </defs>
 
    <rect fill="none" x="0%" y="0%" width="100%" height="100%"
  pointer-events="fill"
  onmousedown="dragScaleOff()"
  onmouseup="dragScaleOff()"
  onmousemove="dragScaleImgBg(evt)"/>
 
    <g id="package" name="autoverhuur"  
  onmousedown="dragOn(evt)"
  onmouseup="dragScaleOff()"
  onmousemove="dragScaleImg(evt)"
  onmouseover="showOverlay(evt)">
 
  <use x="50" y="40" width="200" height="300" stroke="red" fill="red"
xlink:href="#auto"/>
   
  <use x="270" y="200" width="360" height="240" stroke="green"
fill="green" xlink:href="#auto"/>
  
  <use x="20" y="315" width="100" height="100" fill="blue" stroke="blue"
xlink:href="#auto"
      transform="translate(10,0)" />
    </g>
 
   <g id="overlay" visibility="hidden" 
      onmousedown="scaleOn(evt)"
      onmouseup="dragScaleOff()"
      onmousemove="dragScaleImg(evt)">
      <path fill="darkgrey" stroke="white"
     d="M0,0 h-20 l20,-20 z M-12,-3 l9-9 z M-6,-3 l3-3z"/>
   </g>

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