function verstuur(a,b,c,d) {
document.write("<a href=" + "ma" + "ilto:" + a + "@" + b + "." + c + ">" + d + "</a>")
}
function schrijf(a,b,c) {
document.write(a + c + b)
}
function openVenster(url,naam,b,h,scroll) {
l = (screen.width) ? (screen.width-b)/2 : 0;
t = (screen.height) ? (screen.height-h)/2 : 0;
window.open(url,naam,'screenX='+l+',screenY='+t+',width='+b+',height='+h+',scrollbars='+scroll+',toolbar=no,location=no,directories=no,status=no,menubar=no,resizable=yes,')
}