var menus = new Array;
menus[0] = "menu_geladen";
menus[1] = "menu_begin";
menus[2] = "menu_ouders";
menus[3] = "menu_leerlingen";
menus[4] = "menu_leerkrachten";
menus[5] = "menu_begin_geladen";

var topdelen = new Array;
topdelen[1] = "begin";
topdelen[2] = "ouders";
topdelen[3] = "leerlingen";
topdelen[4] = "leerkrachten";

var topdelen_pixels = new Array;
topdelen_pixels[1] = 0;
topdelen_pixels[2] = -427;
topdelen_pixels[3] = -507;
topdelen_pixels[4] = -622;

function wijzigmenu(actief, menu) {
 if (!document.getElementById) return;
 for (x=0; x<6; x++) {
  if (document.getElementById(menus[x])) document.getElementById(menus[x]).style.display = 'none';
 }
 for (x=1; x<5; x++) {
  document.getElementById(topdelen[x]).style.background = 'transparent url(afbeeldingen/top.gif) ' + topdelen_pixels[x] + 'px 0 no-repeat';
 }
 document.getElementById(topdelen[actief]).style.background = 'transparent url(afbeeldingen/top.gif) ' + topdelen_pixels[actief] + 'px -110px no-repeat';
 document.getElementById(menus[actief]).style.display = 'block';
}