// Archivo .js para la función de la página FAQ y Ayuda

var allvisible = 0;

plus = new Image(9,9);
plus.src = "img/tng_plus.gif";
minus = new Image(9,9);
minus.src = "img/tng_minus.gif";

function toggleItem( itemImage, itemContents ) {
	if( itemContents.style.display == 'none' ) {
		itemContents.style.display = 'inline';
		document.images[itemImage].src = minus.src;
	}
	else {
		itemContents.style.display = 'none';
		document.images[itemImage].src = plus.src;
	}
}

function showAll() {
	var item;
	
	document.getElementById('s-express').style.display = '';
	for( var i = 0; i < 4; i++ ) {
		item = "s" + i ;
		document.getElementById(item).style.display = '';
	}
	allvisible = 1;
}

function hideAll() {
	var item;
	
	for( var i = 0; i < 4; i++ ) {
		item = "s" + i ;
		document.getElementById(item).style.display = 'none';
	}
	document.getElementById('s-express').style.display = 'none';
	allvisible = 0;
}

function startAt(step) {
	hideAll();
	document.getElementById(step).style.display='';
}

function nextStep(current) {
	var curstep = "s" + current;
	var nxtstep = "s" + (parseInt(current) + 1);
	
	if( allvisible )
		hideAll();
	else
		document.getElementById(curstep).style.display='none';
	document.getElementById(nxtstep).style.display='';
}

function prevStep(current) {
	var curstep = "s" + current;
	var prvstep = "s" + (parseInt(current) - 1);
	
	if( allvisible )
		hideAll();
	else
		document.getElementById(curstep).style.display='none';
	document.getElementById(prvstep).style.display='';
}

function toc(disp) {
	document.getElementById("toc").style.display = disp;
}

// Fin