function g_onMouseOver(id)
{
	var img = document.getElementById('g_' + id);
	var img_mo = document.getElementById('g_' + id + '_mo');
	img.className = 'hidden';
	img_mo.className = 'visible';
}

function g_onMouseOut(id)
{
	var img = document.getElementById('g_' + id);
	var img_mo = document.getElementById('g_' + id + '_mo');
	img.className = 'visible';
	img_mo.className = 'hidden';
}