function reset_session_variables($pre_tree)
{
/* get the current settings */
$i = 0;
if (sizeof($pre_tree)) {
foreach ($pre_tree as $leaf) {
$tier = tree_tier($leaf["order_key"]);
$tier_string = tree_tier_string($leaf["order_key"]);
$variable = "sess_tree_leaf_expand_" . $leaf["graph_tree_id"] . "_" . $tier_string;
if (isset($_SESSION[$variable])) {
$pre_tree[$i]["visibility"] = $_SESSION[$variable];
unset($_SESSION[$variable]);
} else {
$pre_tree[$i]["visibility"] = true;
}
$i++;
}
foreach ($pre_tree as $leaf) {
$new_leaf = db_fetch_row("SELECT * FROM graph_tree_items WHERE id='" . $leaf['id'] . "'");
$tier = tree_tier($new_leaf["order_key"]);
$tier_string = tree_tier_string($new_leaf["order_key"]);
$variable = "sess_tree_leaf_expand_" . $new_leaf["graph_tree_id"] . "_" . $tier_string;
$_SESSION[$variable] = $leaf["visibility"];
}
}
}
function get_icon($graph_tree_id, $order_key)
{
$variable = "sess_tree_leaf_expand_" . $graph_tree_id . "_" . tree_tier_string($order_key);
if (isset($_SESSION[$variable])) {
if ($_SESSION[$variable]) {
$icon = "images/hide.gif";
} else {
$icon = "images/show.gif";
}
} else {
$icon = "images/hide.gif";
}
return $icon;
}