var _images = new Array();

function img(name, off, on) {
	this.name = name;
	this.on   = on;
	this.off  = off;
	return this;
}

function bgChange(bg) 
{ 
document.body.style.background=bg;
} 


function preload() {
	var imgs = new Array(
		new img("btn_portfolio", "btn_portfolio.gif", "btn_portfolio_over.gif"),
		new img("btn_cadeau", "btn_cadeau.gif", "btn_cadeau_over.gif"),
		new img("btn_informatie", "btn_informatie.gif", "btn_informatie_over.gif"),
		new img("btn_contact", "btn_contact.gif", "btn_contact_over.gif"),
		new img("btn_trouwen", "btn_trouwen.gif", "btn_trouwen_over.gif"),
		new img("btn_zwanger", "btn_zwanger.gif", "btn_zwanger_over.gif"),
		new img("btn_babykind", "btn_babykind.gif", "btn_babykind_over.gif"),
		new img("btn_familie", "btn_familie.gif", "btn_familie_over.gif"),
		new img("btn_reizen", "btn_reizen.gif", "btn_reizen_over.gif"),
		new img("btn_bedrijven", "btn_bedrijven.gif", "btn_bedrijven_over.gif"),
		new img("btn_vrijwerk", "btn_vrijwerk.gif", "btn_vrijwerk_over.gif"),
		new img("btn_volgende", "btn_volgende.gif", "btn_volgende_over.gif"),
		new img("btn_vorige", "btn_vorige.gif", "btn_vorige_over.gif")
	);

	for(var i=0; i<imgs.length; i++) {
		
		_images[imgs[i].name]	  = new Image();
		_images[imgs[i].name].src = "/images/" + imgs[i].off;

		_images[imgs[i].name + "_on"]	  = new Image();
		_images[imgs[i].name + "_on"].src = "/images/" + imgs[i].on;
	}
}

function swap(id, img) {
	try {
		document.getElementById(id).src = _images[img].src;
	} catch(oExcption) {
	}
}

function showSubmenu(menu){
	//document.getElementById("submenu_"+menu).style.display = "block";
	document.getElementById("sub").style.visibility = "visible";
}

function hideSubmenu(menu){
	//document.getElementById("submenu_"+menu).style.display = "none";
	document.getElementById("sub").style.visibility = "hidden";
}

function nextPage(cat, page, maxpages){
	if(page<=maxpages){
		location.href=cat+"page="+page;
	}
}

function prevPage(cat, page){
	if(page>=1){
		location.href=cat+"page="+page;
	}	
}