if (document.images) {
	passportOn = new Image();
	passportOn.src="graphics/nav_rollpassport.gif";
	passportOff= new Image ();
	passportOff.src="graphics/nav_passport.gif";

	visaOn = new Image();
	visaOn.src="graphics/nav_rollvisa.gif";
	visaOff= new Image ();
	visaOff.src="graphics/nav_visa.gif";
	
	passvisaOn = new Image();
	passvisaOn.src="graphics/nav_rollpassvisa.gif";
	passvisaOff= new Image ();
	passvisaOff.src="graphics/nav_passvisa.gif";
	
	travelOn = new Image();
	travelOn.src="graphics/nav_rolltravagen.gif";
	travelOff= new Image ();
	travelOff.src="graphics/nav_travagen.gif";

	forumOn = new Image();
	forumOn.src="graphics/nav_rollforum.gif";
	forumOff= new Image ();
	forumOff.src="graphics/nav_forum.gif";
}


function activate (image_name)
{ if (document.images) {
		document[image_name].src= eval(image_name+ "On.src");
}
}

function deactivate (image_name) {
	if (document.images) {
		document[image_name].src= eval(image_name+ "Off.src");
	}
	
}

function showID(elt) {
	document.getElementById(elt).style.display = "block";
}

function hideID(elt) {
	document.getElementById(elt).style.display = "none";
}