function detectBrowser()
{
var browser=navigator.appName;
var b_version=navigator.appVersion;
var version=parseFloat(b_version);
if ((browser=="Microsoft Internet Explorer")
  && (version>=4))
  {
  return true;
  }
else
  {
  return false;
  }
}

function nextImage() {
var thissound;

if (detectBrowser()) {
	 thissound=document.getElementById(myMp3[currentImage]);
		thissound.Stop();
}
 
 currentImage=currentImage+1;
 if (currentImage>maxImage)
  {
  if (Herhalen.toUpperCase()=='J') {
     currentImage=minImage;
     }
  else {
        currentImage=maxImage;
       }  
  }
  document['beeld'].src=myBeeld[currentImage];
  document.getElementById("TekstBijFoto").innerHTML=myText[currentImage];

if (detectBrowser()) {
 thissound=document.getElementById(myMp3[currentImage]);
		thissound.Play();
}

}

function prevImage() {
  
 var thissound;
 
 if (detectBrowser()) {
 thissound=document.getElementById(myMp3[currentImage]);
		thissound.Stop();

  }
  
  currentImage=currentImage-1;

  if (currentImage<minImage)
    {
	  if (Herhalen.toUpperCase()=='J') {
	     currentImage=maxImage;
	     }
	  else {
	        currentImage=minImage;
	       }
    }
	
  document['beeld'].src=myBeeld[currentImage];
  document.getElementById("TekstBijFoto").innerHTML=myText[currentImage];
  
if (detectBrowser()) {  
  thissound=document.getElementById(myMp3[currentImage]);
		thissound.Play();
  }
}

function HideContent(d) {
document.getElementById(d).style.display = "none";
}
function ShowContent(d) {
document.getElementById(d).style.display = "block";
}
function ReverseDisplay(d) {
if(document.getElementById(d).style.display == "none") { document.getElementById(d).style.display = "block"; }
else { document.getElementById(d).style.display = "none"; }
}