// JavaScript Document
function show(id){
	if(document.getElementById("sub"+id)!=null){
	document.getElementById("sub"+id).style.display = "block";}
}

function weg(id){
	if(document.getElementById("sub"+id)!=null){
	document.getElementById("sub"+id).style.display = "none";}
}

function veranderkleur(id){
	document.getElementById("item"+id).style.background = 'url(http://www.amsterdamsballonnenbedrijf.nl/Images/buttons/bgbutton_over.gif) no-repeat';
}

function kleurterug(id){
	document.getElementById("item"+id).style.background = 'url(http://www.amsterdamsballonnenbedrijf.nl/Images/buttons/bgbutton.gif) no-repeat';
}