var documentLoaded = false;
window.onload = onLoadDocument;

function onLoadDocument()
{
	var img = new Image();
	var languages = ['ru', 'lv', 'en'];
	for (i in languages) {
		img.src = langImageFile(languages[i], true);
	}
	documentLoaded = true;
}

function menuIn(n)
{
	var td = menuTd(n);
	if (td.className == '') {
		td.className = 'active';
	}
}

function menuOut(n)
{
	var td = menuTd(n);
	if (td.className == 'active') {
		td.className = '';
	}
}

function menuTd(n)
{
	return document.getElementById('menu-item-' + n);
}

function langIn(lang)
{
	if (documentLoaded) {
		langImg(lang).src = langImageFile(lang, true);
	}
}

function langOut(lang)
{
	if (documentLoaded) {
		langImg(lang).src = langImageFile(lang, false);
	}
}

function langImg(lang)
{
	return document.getElementById('lang-' + lang);
}

function langImageFile(lang, hover)
{
	return hover ?
		'images/languages/' + lang + '_.gif' :
		'images/languages/' + lang + '.gif';
}