function changeImage(filename)
      {
        mainimage.src = filename;
      }
      function ShowVideo( strYear, strFile )
      {
        var strCode  = '<object id="objVideo" ' +
                      '        classid="clsid:22D6F312-B0F6-11D0-94AB-0080C74C7E95"' +
                      '        codebase="http://activex.microsoft.com/activex/controls/mplayer/en/nsmp2inf.cab#Version=6,4,7,1112"' +
                      '        codetype="application/x-oleobject"' +
                      '        standby="Loading Windows Media Player components…"' +
                      '        type="screen"' +
                      '        width="960"' +
                      '        height="740">';
        strCode =  '<embed id="embVideo"' +
		           '       autostart="true"' +
                   '       enablejavascript="true"' +
                   '       lang="en"' +
                   '       loop="true"' +
                   '       src="/vid/' + strYear + '/' + strFile + '"' +
                   '       type="application/x-mplayer2"' +
                   '       width="720"' +
                   '       height="450"></embed>';
        strCode +=    '</object>';
        
        tagVid = document.getElementById( 'tagVideo' );
        tagVid.innerHTML = strCode;
      }
      function ShowMessage( obj )
      {
        document.getElementById( 'tagSubjectLabel' ).innerHTML = 'Subject:';
        document.getElementById( 'tagSubject' ).innerHTML = obj.title;
      }