function $(id)
{
	return document.getElementById(id);
}

function popup(url, nome, width, height, scrollbars)
{
	if (scrollbars == "1") scrollbars = "yes"
	else scrollbars = "no"
	
	var pop = window.open(url, nome, 'scrollbars=' + scrollbars + ',width=' + width + ',height=' + height + ',menubar=no,left=10,top=10');
	pop.focus();
}

function show(idToShow)
{
	$(idToShow).style.display = '';
}

function hide(idToHide)
{
	$(idToHide).style.display = 'none';
}

function hideAndShow(idToHide, idToShow)
{
	$(idToHide).style.display = 'none';
	$(idToShow).style.display = '';
}