function toggleblockimage(id, img_id)
{
var bl = document.getElementById(id);
var ig = document.getElementById(img_id);

if (bl.style.display == 'none')
	{
	bl.style.display = '';
	ig.src = 'plugins/standard/brlight/img/up.gif';
	} else {
	bl.style.display = 'none';
	ig.src = 'plugins/standard/brlight/img/down.gif';
	}
}