function setImage(){
 
  headerpic = $('headerPicture');  
  for( var n = 2; n <= 6; n++ ) {
    $('headerimage'+n).setOpacity(0);
  }
  headerpic.setStyle({'visibility' : 'visible'});
  currentImage = 1;
  setTimeout("imageLoad()",2500);
}

function imageLoad() { 
  if( currentImage == 6 ) {
    var image = $('headerimage'+currentImage);
    for( var n = 2; n <= 5; n++ ) {
      $('headerimage'+n).setOpacity(0);
    }
    image.fade();
    currentImage = 1;
  }
  else {
    currentImage++;
    var image = $('headerimage'+currentImage);
    image.appear();
  }
  
  setTimeout("imageLoad()",2500);
}
  
  
function formValidation(event){
  if( event.keyCode == 13 ) {
    if ( $('searchBox').value.length == 0 ){
      alert("Er dient eerst een zoekterm te worden ingevuld");
    } else {
      window.location = '/zoekresultaat?query='+escape($('searchBox').value);
    }   
  } 
}
  /*imageArray=[hi1,
              hi2,
              hi3,
              hi4,
              hi5,
              hi6];
  
  currentImage = 0;
  headerpic= $('headerPicture'); 
  hi2.setOpacity(0);
  hi3.setOpacity(0);
  hi4.setOpacity(0);
  hi5.setOpacity(0);
  hi6.setOpacity(0); 
  headerpic.setStyle({'visibility' : 'visible'});
  
}*/

/*
function imageGone() {
    
  if( currentImage == imageArray.length ){
      hi2.setOpacity(0);
      hi3.setOpacity(0);
      hi4.setOpacity(0);
      hi5.setOpacity(0);
      new Effect.Fade(hi6, { afterFinish: function ( ) {
                                           hi6.setOpacity(0); 
                                           setTimeout("imageGone()", 1500);
           }});
        
     currentImage = 1;    
  }else{
    imageArray[ currentImage ].appear();
    currentImage++;
    setTimeout("imageGone()", 2500);
  }
  
}*/