var speed = 3000; // millisec
var link_default_css = 'VoorpaginaTekst2';
var link_highlight_css = 'VoorpaginaTekst2MO';

var img = new Array(); // stop hier alle images in
var img_url = new Array(); // de url's van de image voor de preload
var imgholder = '';
var hlink = '';
var current_img = 0;
var count_img = 0;
var timerID = 0;

function startLoop() {
    imgholder = document.getElementById('kortnieuws');
    count_img = img.length;
    
    /* switch image */
    if(img[current_img]) {
        imgholder.innerHTML = img[current_img];
    } else {
        /* begin weer bij het eerste plaatje als current_img niet bestaat */
        imgholder.innerHTML = img[0];
        current_img = 0;
    }

    /* highlight link */
    hlink = document.getElementById('link'+current_img);
    hlink.className = link_highlight_css;
    /* loop door de links heen en maak de niet gehighlighte links weer blauw */
    for(var i = 0; i < count_img; i++) {
        if(i != current_img) {
            document.getElementById('link'+i).className = link_default_css;
        }
    }

    current_img++;
    timerID = setTimeout('startLoop()', speed);
}

function pauseLoop() {
    count_img = img.length;
    if(timerID > 0) {
        clearTimeout(timerID);
    }
    /* maak alle links weer blauw */
    for(var i = 0; i < count_img; i++) {
        document.getElementById('link'+i).className = link_default_css;
    }
}

function switchImage(num) {
    /* stop de loop */
    pauseLoop();
    imgholder = document.getElementById('kortnieuws');

    /* switch image */
    if(img[num]) {
        imgholder.innerHTML = img[num];
        current_img = num;
    } else {
        /* pak het eerste plaatje als img[num] niet bestaat */
        imgholder.innerHTML = img[0];
        current_img = 0;
    }
	
function loadImage()  {
	if (document.images)
    {
      preload_image_object = new Image();
      // set image url
      //img_url[0] = "http://www.autowereld.com//imagesDB/75/7871745542_mas.jpg";
      //img_url[1] = "http://www.autowereld.com//imagesDB/75/78310241194_neeza.jpg";
      //img_url[2] = "http://www.autowereld.com//imagesDB/75/7811412868_a.jpg";
      //img_url[3] = "http://www.autowereld.com//imagesDB/75/78111243735_hummer.jpg";

       var i = 0;
       for(i=0; i<=3; i++) 
         preload_image_object.src = img_url[i];
    }
  }
	
}