function display(id) {
	element = document.getElementById(id);
	if(element.style.display == 'none')
		element.style.display = '';
	else
		element.style.display = 'none';
}

function doDisplay(id, show) {
	element = document.getElementById(id);
	if(show)
		element.style.display = '';
	else
		element.style.display = 'none';
}

function visibile(id) {
	element = document.getElementById(id);
	if(element.style.visibility == 'hidden')
		element.style.visibility = '';
	else
		element.style.visibility = 'hidden';
}

function doVisible(id, show) {
	element = document.getElementById(id);
	if(show)
		element.style.visibility = '';
	else
		element.style.visibility = 'hidden';
}

function disable(id, input) {
	element = document.getElementById(id);
	input = document.getElementById(input);
	if(element.style.display == 'none')
		input.disabled = true;
	else
		input.disabled = false;
}

function hyperlink(id) {
	url = document.getElementById('url_'+id);
	if(url.style.display == 'none')
		url.style.display = '';
	else
		url.style.display = 'none';
}