function land(ref, target) {
  lowtarget=target.toLowerCase();
    if (lowtarget=="_self") {window.location=loc;}
    else {
       if (lowtarget=="_top") {top.location=loc;}
       else {
          if (lowtarget=="_blank") {window.open(loc);}
          else {
            if (lowtarget=="_parent") {parent.location=loc;}
            else {parent.frames[target].location=loc;};
          }
       }
    }
}

function jump(menu) {
  ref=menu.choice.options[menu.choice.selectedIndex].value;
  splitc=ref.lastIndexOf("*");
  target="";
  
  if (splitc!=-1) {
     loc=ref.substring(0,splitc);
     target=ref.substring(splitc+1,1000);
  }
  else { loc=ref; target="_self"; };
  
  if (ref != "") {land(loc,target);}
}

// alle afbeeldingen aanklikken om te verwijderen
function checkUncheckAll(theElement) {
     var theForm = theElement.form, z = 0;
	 for(z=0; z<theForm.length;z++){
      if(theForm[z].type == 'checkbox' && theForm[z].name != 'checkall'){
	  theForm[z].checked = theElement.checked;
	  }
     }
}