function js_selectSerie( object )
{
	var arr = object.options[object.selectedIndex].value.match(/(.*)\.(.*)/);
	window.location = '/?page=courses&type=' + arr[2].toLowerCase() + '&number=' + arr[1];
}

function js_toggleSerie( number )
{
	var div = document.getElementById( 'js_expl_' + number );

	if (div.style.visibility == 'hidden')
	{
		div.style.visibility = 'visible';
		div.style.position = 'relative';
	}
	else
	{
		div.style.position = 'absolute';
		div.style.visibility = 'hidden';
	}
}

function js_openSeries( number )
{
	var div = document.getElementById( 'js_expl_' + number );

	if (div.style.visibility == 'hidden')
	{
		div.style.visibility = 'visible';
		div.style.position = 'relative';
	}
	try
	{
		document.getElementById('js_expl_' + number).parentElement.scrollIntoView()
		window.scrollBy(0, -5);
	} 
	catch(e)
	{
		// do nothing...
	}
}