var global_siteroot = '/';
function setSiteroot(siteroot) {
   global_siteroot = siteroot;
}
function getSiteroot() {
   return global_siteroot;
}

function showProvince(province) {
   var element = document.getElementById('province_image');
   if (element) {
      element.src = getSiteroot()+'img/landkaart_'+province+'.png';
   }
}

var myimages=new Array()
function preloadimages(){
   var element = document.getElementById('province_image');
   if (element) {
      for (i=0;i<preloadimages.arguments.length;i++){
         myimages[i]=new Image();
         myimages[i].src=getSiteroot()+'img/landkaart_'+preloadimages.arguments[i]+'.png';
      }  
      element.src = getSiteroot()+'img/landkaart.png';
   }
}
Event.observe(document,'dom:loaded', function () {
      preloadimages('noordholland', 'zuidholland', 'flevoland', 'friesland', 'groningen', 'drenthe', 'overijsel', 'zeeland', 'utrecht', 'noordbrabant', 'gelderland', 'limburg'); });