imgarray = new Array();
imgidx = 0;

function changeimg(targetid, imgpath) {
  var targetimg = document.getElementById(targetid);
  targetimg.src = imgpath;
  return false;
}

function preloadimg(imgpath) {
  imgarray[imgidx] = new Image();
  imgarray[imgidx].src = imgpath;
  imgidx++;
}

function startpreload() {
  preloadimg('img/topnavi/button1_hover.gif');
  preloadimg('img/topnavi/button2_hover.gif');
  preloadimg('img/topnavi/button3_hover.gif');
  preloadimg('img/topnavi/button4_hover.gif');
  preloadimg('img/topnavi/button5_hover.gif');
  preloadimg('img/topnavi/button6_hover.gif');
  preloadimg('img/topnavi/button1_down.gif');
  preloadimg('img/topnavi/button2_down.gif');
  preloadimg('img/topnavi/button3_down.gif');
  preloadimg('img/topnavi/button4_down.gif');
  preloadimg('img/topnavi/button5_down.gif');
  preloadimg('img/topnavi/button6_down.gif');
  preloadimg('img/quicknavi/events_hover.gif');
  preloadimg('img/quicknavi/events_down.gif');
  preloadimg('img/quicknavi/contact_hover.gif');
  preloadimg('img/quicknavi/contact_down.gif');
}

function registration(target,filenumber,scroll,lang) {
  lang = lang + "";
  var w = null;
  if(lang == 'undefined'){lang = "";}

  if(scroll == 'true'){
  	w = window.open(target + "/registration.php?f=" + filenumber + "&lang=" + lang,"nbs_download","width=360,height=610,innerWidth=350,innerHeight=500,screenX=50,screenY=50,menubar=no,toolbar=no,location=no,personalbar=no,directories=no,scrollbars=yes,status=no,resizable=yes");
  }else{
  	w = window.open(target + "/registration.php?f=" + filenumber + "&lang=" + lang,"nbs_download","width=350,height=600,innerWidth=350,innerHeight=500,screenX=50,screenY=50,menubar=no,toolbar=no,location=no,personalbar=no,directories=no,scrollbars=no,status=no,resizable=yes");
  }
  w.focus();
  // 'resizable=no' removed from the list because of PDFs may open to same window.
  return false;
}

function openbasket(target) {
  var w = window.open(target,"nbs_download","width=720,height=610,innerWidth=700,innerHeight=590,screenX=50,screenY=50,menubar=no,toolbar=no,location=no,personalbar=no,directories=no,scrollbars=yes,status=no,resizable=yes");
  w.focus();
  return false;
}