var PreloadImgLst = new Array();

function StartZoeken(VormObj, defaulttxt)
{
  ZoekTerm=VormObj.words.value;

  if(ZoekTerm==defaulttxt) ZoekTerm='';

  if(ZoekTerm.length)
  {
    return true;
  }
  else
  {
    return false;
  }

}


function CheckZoekInvoer(Vorm,defvalue)
{

  if(Vorm.words.value!=defvalue)
    return true;
  else
    return false;
}


function maximizeWindow(WindowObj)
{
  if(parseInt(navigator.appVersion)>3)
  {
    if(navigator.appName=="Netscape")
    {
      if(WindowObj.screenX>0 || WindowObj.screenY>0) WindowObj.moveTo(0,0);
      if(WindowObj.outerWidth < screen.availWidth) WindowObj.outerWidth=screen.availWidth;
      if(WindowObj.outerHeight < screen.availHeight) WindowObj.outerHeight=screen.availHeight;
    }
    else
    {
      WindowObj.moveTo(-4,-4);
      WindowObj.resizeTo(screen.availWidth+8,screen.availHeight+8);
    }
  }
}


function trim(value) {
	value = value.replace(/^\s+/,'');
	value = value.replace(/\s+$/,'');
	return value;
}


function NieuwVenster(waarheen)
{
  DetailVenster = window.open(waarheen,'Detail','toolbar=no,location=no,directories=no,status=no,scrollbars=yes,resizeable=yes,width=800,height=600');
  DetailVenster.focus();
}


function VideoVenster(waarheen)
{
  DetailVenster = window.open(waarheen,'Detail','toolbar=no,location=no,directories=no,status=no,scrollbars=no,resizeable=no,width=350,height=400');
  DetailVenster.focus();
}


function NaarWebsite(waarheen)
{
  DetailVenster = window.open(waarheen,'_blank');
  DetailVenster.focus();
}


function GaNaar(naarurl)
{
  document.location.href=naarurl;
}


function onPreload(aImages, nImages)
{
  if(nImages == aImages.length){
    // BlokeerInteraktie=false;
    return;
  }
}


//Image preload routines staan hieronder
function ImagePreloader(images, callback)
{

  this.callback = callback;// store the callback

  this.nLoaded = 0;
  this.nProcessed = 0;
  this.aImages = new Array;

  this.nImages = images.length;

  for(var i=0; i < images.length; i++){// for each image, call preload()
    this.preload(images[i]);
  }

}

ImagePreloader.prototype.preload = function(image)
{

  // create new Image object and add to array
  //var oImage = new Image;
  var oImage = document.createElement("img"); // met new Image() werkt 't zeker niet!

  this.aImages.push(oImage);

  // set up event handlers for the Image object
  oImage.onload = ImagePreloader.prototype.onload;
  oImage.onerror = ImagePreloader.prototype.onerror;
  oImage.onabort = ImagePreloader.prototype.onabort;

  // assign pointer back to this.
  oImage.oImagePreloader = this;
  oImage.bLoaded = false;

  // assign the .src property of the Image object
  oImage.src = image;
}

ImagePreloader.prototype.onComplete = function()
{
  this.nProcessed++;

  if(this.nProcessed == this.nImages)
    this.callback(this.aImages, this.nLoaded);

}

ImagePreloader.prototype.onload = function()
{
  this.bLoaded = true;
  this.oImagePreloader.nLoaded++;
  this.oImagePreloader.onComplete();
}

ImagePreloader.prototype.onerror = function()
{
  this.bError = true;
  this.oImagePreloader.onComplete();
}

ImagePreloader.prototype.onabort = function()
{
  this.bAbort = true;
  this.oImagePreloader.onComplete();

}