function toggle(idName)
{
	//check if this id element exist
	if(document.getElementById(idName)) {
		var idElement = document.getElementById(idName);

		if(idElement.style.display != 'none') {
			idElement.style.display = 'none';
		} 
		else {
			idElement.style.display = '';
		}
	}
}

function closeButton(idName)
{
	//check if this id element exist
	if(document.getElementById(idName)) {
		document.getElementById(idName).style.display = 'none';
	}
}