function getE(name)
{
	if (document.getElementById)
		var elem = document.getElementById(name);
	else if (document.all)
		var elem = document.all[name];
	else if (document.layers)
		var elem = document.layers[name];
	return elem;
}

function toggleLayer(whichLayer, flag)
{
	getE(whichLayer).style.display = (flag == '') ? 'none' : 'block';
}

function openCloseLayer(whichLayer)
{
 	getE(whichLayer).style.display = (getE(whichLayer).style.display == 'none') ? 'block' : 'none';
}

function giftDiv()
{
	getE('gift_div').style.display = getE('gift').checked ? 'block' : 'none';
}