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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
	  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
  <head>
    <title>example</title>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <style type="text/css">
      /* uncomment this for the last test*/
      /* #example-para{display:none !important; visibility: hidden !important} */
    </style>
  </head>
  <body id="example">
    <div id="example-branding">
      <h2 id="example-heading"><a href="http://www.example.com">Example Site</a></h2>
      <p id="example-para">Example paragraph</p>
    </div>
    <script type="text/javascript" src="prototype.js"></script>
    <script type="text/javascript">
 
      var elem = $("example-para");
      var wrapper = $("example-branding");
 
      console.log("displayed wrapper, displayed elem:" + 
                  "\nviewportoffset() " + elem.viewportOffset() + 
                  "\nvisible() " + elem.visible() +
                  "\ngetStyle('display') " + elem.getStyle("display") +
                  "\ngetStyle('visibility') " + elem.getStyle("visibility")
                 );
      elem.hide();
      console.log("displayed wrapper, hidden elem:" + 
                  "\nviewportoffset() " + elem.viewportOffset() + 
                  "\nvisible() " + elem.visible() +
                  "\ngetStyle('display') " + elem.getStyle("display") +
                  "\ngetStyle('visibility') " + elem.getStyle("visibility")
                 );
      elem.show();
      wrapper.hide();
      console.log("hidden wrapper, shown elemm:" + 
                  "\nviewportoffset() " + elem.viewportOffset() + 
                  "\nvisible() " + elem.visible() +
                  "\ngetStyle('display') " + elem.getStyle("display") +
                  "\ngetStyle('visibility') " + elem.getStyle("visibility")
                 );
      wrapper.show();
      elem.setStyle({visibility:"hidden"});
      console.log("displayed wrapper, invisible elem:" + 
                  "\nviewportoffset() " + elem.viewportOffset() + 
                  "\nvisible() " + elem.visible() +
                  "\ngetStyle('display') " + elem.getStyle("display") +
                  "\ngetStyle('visibility') " + elem.getStyle("visibility")
                 );
      wrapper.setStyle({visibility:"hidden"});
      elem.setStyle({visibility:"visible"});
      console.log("invisible wrapper, visible elem:" + 
                  "\nviewportoffset() " + elem.viewportOffset() + 
                  "\nvisible() " + elem.visible() +
                  "\ngetStyle('display') " + elem.getStyle("display") +
                  "\ngetStyle('visibility') " + elem.getStyle("visibility")
                 );
      wrapper.setStyle({visibility:"visible"});
      elem.setStyle({textIndent:"-10000px"});
      console.log("visible wrapper, negative indented elem:" + 
                  "\nviewportoffset() " + elem.viewportOffset() + 
                  "\nvisible() " + elem.visible() +
                  "\ngetStyle('display') " + elem.getStyle("display") +
                  "\ngetStyle('visibility') " + elem.getStyle("visibility")
                 );
      elem.setStyle({textIndent:"0px"});
      wrapper.setStyle({textIndent:"-10000px"});
      console.log("negative indented wrapper, visible elem:" + 
                  "\nviewportoffset() " + elem.viewportOffset() + 
                  "\nvisible() " + elem.visible() +
                  "\ngetStyle('display') " + elem.getStyle("display") +
                  "\ngetStyle('visibility') " + elem.getStyle("visibility")
                 );
      wrapper.setStyle({textIndent:"0px"});
      elem.setStyle({position:"relative",left:"-10000px"})
      console.log("visible wrapper, negative positioned elem:" + 
                  "\nviewportoffset() " + elem.viewportOffset() + 
                  "\nvisible() " + elem.visible() +
                  "\ngetStyle('display') " + elem.getStyle("display") +
                  "\ngetStyle('visibility') " + elem.getStyle("visibility")
                 );
      elem.setStyle({position:"relative",left:"10000px"})
      console.log("visible wrapper, positive positioned elem:" + 
                  "\nviewportoffset() " + elem.viewportOffset() + 
                  "\nvisible() " + elem.visible() +
                  "\ngetStyle('display') " + elem.getStyle("display") +
                  "\ngetStyle('visibility') " + elem.getStyle("visibility")
                 );
      elem.setStyle({position:"static",display:"inline"})
      console.log("visible wrapper, inline elem:" + 
                  "\nviewportoffset() " + elem.viewportOffset() + 
                  "\nvisible() " + elem.visible() +
                  "\ngetStyle('display') " + elem.getStyle("display") +
                  "\ngetStyle('visibility') " + elem.getStyle("visibility")
                 );
      elem.setStyle({display:"block", visibility:"visible"})
      console.log("hidden css with !important, displayed elem:" + 
                  "\nviewportoffset() " + elem.viewportOffset() + 
                  "\nvisible() " + elem.visible() +
                  "\ngetStyle('display') " + elem.getStyle("display") +
                  "\ngetStyle('visibility') " + elem.getStyle("visibility") +
                  "\ngetComputedStyle() \n"
                 );
      console.log(getComputedStyle(elem,null));
    </script>
 
<!--
Test results in Firebug console:
 
displayed wrapper, displayed elem: 
viewportoffset() 8,69 
visible() true 
getStyle('display') block 
getStyle('visibility') visible
 
displayed wrapper, hidden elem: 
viewportoffset() 0,0 
visible() false 
getStyle('display') none 
getStyle('visibility') visible
 
hidden wrapper, shown elemm: 
viewportoffset() 0,0 
visible() true 
getStyle('display') block 
getStyle('visibility') visible
 
displayed wrapper, invisible elem: 
viewportoffset() 8,69 
visible() true 
getStyle('display') block 
getStyle('visibility') hidden
 
invisible wrapper, visible elem: 
viewportoffset() 8,69 
visible() true 
getStyle('display') block 
getStyle('visibility') visible
 
visible wrapper, negative indented elem: 
viewportoffset() 8,69 
visible() true 
getStyle('display') block 
getStyle('visibility') visible
 
negative indented wrapper, visible elem: 
viewportoffset() 8,69 
visible() true 
getStyle('display') block 
getStyle('visibility') visible
 
visible wrapper, negative positioned elem: 
viewportoffset() -9992,69 
visible() true 
getStyle('display') block 
getStyle('visibility') visible
 
visible wrapper, positive positioned elem: 
viewportoffset() 10008,69 
visible() true 
getStyle('display') block 
getStyle('visibility') visible
 
visible wrapper, inline elem: 
viewportoffset() 8,69 
visible() true 
getStyle('display') inline 
getStyle('visibility') visible
 
//uncomment the style def for this test
 
hidden css with !important, displayed elem: 
viewportoffset() 8,69 
visible() true 
getStyle('display') block 
getStyle('visibility') visible 
getComputedStyle() ComputedCSSStyleDeclaration position=static display=none visibility=hidden
-->
 
  </body>
</html>

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