function show(element)//shows first child
{
	element.children[0].style.visibility = "visible";
}

function hide(element)//hides first child
{
	element.children[0].style.visibility = "hidden";
}

function showElement(element)
{
	document.getElementById(element).style.visibility = "visible";
}

function hideElement(element)
{
	document.getElementById(element).style.visibility = "hidden";
}