function newImage(arg) {
  if (document.images) {
    rslt = new Image();
    rslt.src = arg;
    return rslt;
  }
}

function changeImages() {
  if (document.images && (preloadFlag == true)) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
    }
  }
}

var preloadFlag = false;
function preloadImages() {
  if (document.images) {
    button_anmelden_over = newImage("<?php echo DIR_WS_TEMPLATES; ?>/pics/button_anmelden_over.gif");
    button_modelsuchen_over = newImage("<?php echo DIR_WS_TEMPLATES; ?>/pics/button_modelsuchen_over.gif");
    button_fotografsuchen_over = newImage("<?php echo DIR_WS_TEMPLATES; ?>/pics/button_fotografsuchen_over.gif");
    button_nutzungsbedingung_over = newImage("<?php echo DIR_WS_TEMPLATES; ?>/pics/button_nutzungsbedingung_over.gif");
    button_forum_over = newImage("<?php echo DIR_WS_TEMPLATES; ?>/pics/button_forum_over.gif");
    button_newsletter_over = newImage("<?php echo DIR_WS_TEMPLATES; ?>/pics/button_newsletter_over.gif");
    button_tophome_over = newImage("<?php echo DIR_WS_TEMPLATES; ?>/pics/buttontop_home_over.gif");
    button_topimpressum_over = newImage("<?php echo DIR_WS_TEMPLATES; ?>/pics/buttontop_impressum_over.gif");
    button_topagb_over = newImage("<?php echo DIR_WS_TEMPLATES; ?>/pics/buttontop_agb_over.gif");
    preloadFlag = true;
  }
}

function popupWindow(url,x_size,y_size) {
  window.open(url,'popupWindow','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,copyhistory=no,width='+x_size+',height='+y_size+',screenX=150,screenY=150,top=150,left=150')
}