var FormaatMenu = scrollmenu.offsetHeight;
var FormaatContent = contentLayer.offsetHeight;

function checklayer(){

if (document.layers) {
var page = eval(document.contentLayer);
}
else {
if (document.getElementById) {
var page= eval("document.getElementById('contentLayer').style");
}
else {
if (document.all) {
var page = eval(document.all.contentLayer.style);
      }
   }
}

var NwFormaatMenu = scrollmenu.offsetHeight;

if(NwFormaatMenu != FormaatMenu){

page.top=0;

}
if(FormaatContent > NwFormaatMenu){
MM_showHideLayers('scrollmenu','','show');
}
else{

MM_showHideLayers('scrollmenu','','hide');
}
}
setTimeout('checklayer()',10);