been visited
$current_node=$this->items["d_id][$i]"];
$j=$i;
$i=$this->find($this->items["f_node][$i]"]);//up to parent
//echo $this->items["l_node][$i]"];
if(($this->items["r_node][$i]"]==$current_node)) {//his parent use right point
echo "<table><tr><td>";
for ($k=0;$k<$this->count;$k++) { echo " ";}
echo "<a href=../../\"main.php?d_id=".$this->items["d_id][$j]"]."\" target=\"rightframe\">".$this->items["node_value][$j]"]."</a>";
//echo $this->items["node_value][$j]"];
echo " <a href=http://www.dvbbs.net/tech/php/addnode.php?id=".$this->items["d_id][$j]"]." target=\"rightframe\"><font size=2 color=red>add</font></a>";
echo " <a href=http://www.dvbbs.net/tech/php/delnode.php?id=".$this->items["d_id][$j]"]."><font size=2 color=red>del</font></a>";
echo "</td></tr></table>";
echo "</div>";
$this->items["r_node][$i]"]=-1;
}
if(($this->items["l_node][$i]"]==$current_node)) {//his parent use left point
$current_node=$this->items["d_id][$i]"];
$j=$i;
$i=$this->find($this->items["f_node][$i]"]);//up to parent
//echo $this->items["l_node][$i]"];
if(($this->items["r_node][$i]"]==$current_node)) {//his parent use right point
echo "<table><tr><td>";
for ($k=0;$k<$this->count;$k++) { echo " ";}
echo "<a href=../../\"main.php?d_id=".$this->items["d_id][$j]"]."\" target=\"rightframe\">".$this->items["node_value][$j]"]."</a>";
//echo $this->items["node_value][$j]"];
echo " <a href=http://www.dvbbs.net/tech/php/addnode.php?id=".$this->items["d_id][$j]"]." target=\"rightframe\"><font size=2 color=red>add</font></a>";
echo " <a href=http://www.dvbbs.net/tech/php/delnode.php?id=".$this->items["d_id][$j]"]."><font size=2 color=red>del</font></a>";
echo "</td></tr></table>";
echo "</div>";
$this->items["r_node][$i]"]=-1;
}
if(($this->items["l_node][$i]"]==$current_node)) {//his parent use left point
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