//Detect "Acrobat Reader"
//Example:
//  if (acrobat.installed) 
//  document.write("You have Acrobat Reader " + acrobat.version + " installed.");

var acrobat=new Object();

acrobat.installed=true;
acrobat.version='0.0';

if (navigator.plugins && navigator.plugins.length) {
  for (x=0, n = navigator.plugins.length; x < n; x++ ) {
    if (navigator.plugins[x].description.indexOf('Adobe Acrobat') != -1) {
      acrobat.version=parseFloat(navigator.plugins[x].description.split('Version')[1]);
      if (acrobat.version.toString().length == 1) acrobat.version+='.0';
      acrobat.installed=true;
      break;
    }
  }
}
else if (window.ActiveXObject) {
  for (x=2; x<10; x++) {
    try {
      oAcro=eval("new ActiveXObject('PDF.PdfCtrl."+x+"');");
      if (oAcro) {
        acrobat.installed=true;
        acrobat.version=x+'.0';
      }
    }
    catch(e) {}
  }
  try {
    oAcro4=new ActiveXObject('PDF.PdfCtrl.1');
    if (oAcro4) {
      acrobat.installed=true;
      acrobat.version='4.0';
    }
  }
  catch(e) {}
  try {
    oAcro7=new ActiveXObject('AcroPDF.PDF.1');
    if (oAcro7) {
      acrobat.installed=true;
      acrobat.version='7.0';
    }
  }
  catch(e) {}
}

function isAcrobatInstalled () {
  //alert('Acrobat('+acrobat.installed+') v'+acrobat.version);
  return acrobat.installed && (acrobat.version != '0.0');
}