var ie4 = (document.all) ? true : false;
var ns4 = (document.layers) ? true : false;
var ns6 = (document.getElementById && !document.all) ? true : false;
function hidelayer(lay) {
if (ie4) {document.all[lay].style.visibility = "hidden";}
if (ns4) {document.layers[lay].visibility = "hide";}
if (ns6) {document.getElementById([lay]).style.display = "none";}
}
function showlayer(lay) {
if (ie4) {document.all[lay].style.visibility = "visible";}
if (ns4) {document.layers[lay].visibility = "show";}
if (ns6) {document.getElementById([lay]).style.display = "block";}
}
function writetolayer(lay,txt) {
if (ie4) {
document.all[lay].innerHTML = txt;
}
if (ns4) {
document[lay].document.write(txt);
document[lay].document.close();
}
if (ns6) {
over = document.getElementById([lay]);
range = document.createRange();
range.setStartBefore(over);
domfrag = range.createContextualFragment(txt);
while (over.hasChildNodes()) {
over.removeChild(over.lastChild);
}
over.appendChild(domfrag);
   }
}

function write_open()
{
	wipe1()
	writetolayer("snelmenulayer","<table border=0 cellspacing=0 cellpadding=0 align=left><tr><td><a href='Javascript:write_dicht()'><img src='/rabosite/images/menu/snelmenu_open.gif' border='0' name='persmenu' alt='Sluit mijn snelmenu' onmouseover=persmenu.src='/rabosite/images/menu/snelmenu_open_mo.gif' onmouseout=persmenu.src='/rabosite/images/menu/snelmenu_open.gif'></a></td></tr></table>")
}

function write_dicht()
{
	wipe2()
	writetolayer("snelmenulayer","<table border=0 cellspacing=0 cellpadding=0 align=left><tr><td><a href='Javascript:write_open()'><img src='/rabosite/images/menu/snelmenu_dicht.gif' border='0' name='persmenu' alt='Open mijn snelmenu' onmouseover=persmenu.src='/rabosite/images/menu/snelmenu_dicht_mo.gif' onmouseout=persmenu.src='/rabosite/images/menu/snelmenu_dicht.gif'></a></td></tr></table>")
}