startpage =  location.search.substring(1);
if (startpage < 1) { startpage = "Welkom" };
nwvenster(startpage);
nwbuttons();

scrollsa = 0;
function scrollactie() {
if (scrollsa) { clearTimeout(scrollsa) };
scrollsa = setTimeout("scrollactie2()",250) ;
}
function scrollactie2() {
HG = document.getElementById('divcenter').clientHeight;
BRD = document.getElementById('divcenter').clientWidth;
ba = document.getElementById('basisactie').style;
sa = document.getElementById('scrolla1').style;
sa2 = document.getElementById('scrolla2').style;
x = (BRD/2)-300;
y = (HG/2)-197;
ba.left = x;
ba.top = y;
sa.top = y;
sa.left = x;
sa2.top = y;
sa2.left = x;
beginel();
}
function beginel() {
y-=1;
{ if (y + 395<0) y=HG+20 };
sa.top = y;
sa2.top = y;
scrollsa = setTimeout("beginel()",25);
}