/**
 * function dropDown
 * @comment open a box and close the previous opened
 * @author Benoit Gilloz www.ai-development.com
 * @since 24/09/2007
**/
var current = '';
var link = ''
function dropDown(id, from)
{
	var element = document.getElementById(id);
	var h2 = document.getElementById(from);
	
	if(element.style.display == 'block')
	{
		element.style.display = 'none';
		h2.style.backgroundPosition = 'left 5px';
	}
	else
	{
		if(current != '') 
		{
			current.style.display = 'none';
			link.style.backgroundPosition = 'left 5px';
		}
		element.style.display = 'block';
		h2.style.backgroundPosition = 'bottom left';
		current = element;
		link = h2;
	}
}