function toggle (type, id)
{
	if (document.getElementById(type + "Row_" + id).style.display == 'none')
	{
		document.getElementById(type + "Img_" + id).src = "images/tree_down.gif";
		document.getElementById(type + "Row_" + id).style.display = "";
	}
	else
	{
		document.getElementById(type + "Img_" + id).src = "images/tree_right.gif";
		document.getElementById(type + "Row_" + id).style.display = "none";
	}
}