function checkBox(infos)
{
	topic = document.getElementById(infos);
	if (topic != null) {
		style= topic.style;
		style.display='none';
	}
}

function parseBox(infos)
{
	topic = document.getElementById(infos);
	style = topic.style;
	if (style.display == 'block') {
	    style.display = 'none';
	} else {
	    style.display = 'block';
	}
}