function hyperlinks(target)
{
   if (target) where = "_blank";
   else where = "_self";
   for (var i=0; i<=(document.links.length-1); i++)
   {
   document.links[i].target = where;
   }
}

function NieuwVenster(URL)
{
window.open(URL, "foutform", "width=450,height=350,top=40,left=40");
}