'selected is null' or not an object

bugfinder · May 17, 2009

Good day everybody, i guess i have issue with my code i get 'selected is null' or not an object error can some one help me out with this ..

lines 128 and 155

<?
include('config.php');
include('connect.php');
include('checkusersession.php');
if (!isset($target_type))
	$target_type = 'all';	
?>
<form  name='form_allocate_terminals'>
<table  border="0" cellpadding="4" cellspacing="4" width="50%" align="center" class="tableForm">
<tr >
  	   
	<td align="left" valign="middle" width="3%" >						
		<font color="#000000"><strong>Type:</strong></font>       
	</td>
	<td align="left" valign="middle"   colspan="5">
	   <select name="message" >
		<?
			$sqlMsg = "SELECT * FROM `".$DBTablesPrefix."_emergency_type`";
			$Infos = mysql_query($sqlMsg) or die("Query Failed 1");
			$j = 0; 
			while($Row_Infos = mysql_fetch_assoc($Infos)) 
		{
		    $j++;
			$Id = $Row_Infos['Id'];
			$name = $Row_Infos['name'];
			echo "<option value='".$Id."' ".$strSelected.">".$name;
		}
		?>
	   </select>			
    </td>
  </tr>	
  <tr bgcolor="#ECECEC" >
		<td align="left" valign="middle" width="3%" colspan="4">
		<input type="radio" name="target_type" value="all" <?=($target_type=="all")?"checked":""?> onClick="disableItems(this);">
		<font color="#000000" size="2"><strong>All</strong></font>
	</td>    
   </tr>   
   <tr bgcolor="#ECECEC">
		<td align="left" valign="middle" width="3%" colspan="4">
		<input type="radio" name="target_type" value="room" <?=($target_type=="room")?"checked":""?> onClick="disableItems(this);">
		<font color="#000000" size="2"><strong>Rooms</strong></font>
	</td> 
</tr>
<tr >
 	<td align="left" valign="middle" width="30%">
          <select name="target_list[]" id ='target_list' size="3" multiple style="width:100 ">
            <?
				//terminal identification in multi-terminal rooms
			$query ="SELECT IP, Room FROM `".$DBTablesPrefix."_stbs`"."WHERE Version='aminet110' "." ORDER BY Room ";
             	$Infos = mysql_query($query) or die("Query failed on line 188");
			$i = 0;
			while($Row_Infos = mysql_fetch_array($Infos))
				{
				$i++;
				$IP 	= $Row_Infos['IP'];
				$Room 	= $Row_Infos['Room'];						
				$messRoom = Room; 
				//echo "<option value='".$Room[$i]."' ".$strSelected.">".$Room."::".$IP."\r\n";
			  echo "<option value='".$Room[$i]."' ".$strSelected.">$messRoom ".$Room." \r\n";
				}
		 ?>
          </select>
</td>
	<td  width="10%" align="center" valign="middle">
		<input type="hidden" name="action" value="add">
		 <table  border="0">                 
			<tr align="center" height="50%">
				  <td width="30%">
					<?
					echo '<img src="../admin/img/right.gif"  border="0"><img src="../admin/img/right.gif"  border="0">';
					?>
				 </td>
				 <td>

				<input type="button" onClick='movein()' value="Add">

				 </td>
				<td width="30%">
				<?
				 echo '<img src="../admin/img/right.gif"  border="0"><img src="../admin/img/right.gif"  border="0">';
				 ?>																
				</td>
		   </tr>
			 <tr align="center" height="50%">
				<td width="30%">
					<?
						echo '<img src="../admin/img/left.gif"  border="0"><img src="../admin/img/left.gif"  border="0">';
					?>
				</td>
				<td>
				<input type="button" onClick="moveout()" value="Remove">
				</td>
				<td width="30%"><? echo '<img src="../admin/img/left.gif"  border="0"><img src="../admin/img/left.gif"  border="0">';?>
				</td>																
			 </tr>
      </table>                           
  </td>

	  <td align="right" width="30%">
           <select name="allocatedTerminals[]" id='allocatedTerminals' size="3" multiple style="width:100 " >					

		</select>
  </td>
</tr>
  <tr align="center" >
<td colspan="4"><input type="button" name='btnSend' value="Send" onClick="sendemergency(form_allocate_terminals)">
     <!-- <input name="btnsend"  type="button" class="buttform" id="34" value="Send Emergency" onclick="pushpage()" />--></td>
  </tr>														
</table>               					
</form>
<script language="javascript">
var cmdLink = "EMERGENCY_execcommand.php?Emergency=<?php echo $name;?>&targetType=<?php echo $target_type;?>&ip=<?php echo $IP;?>";
function pushpage()
{
Link = cmdLink+" SEND";
//alert(Link);
var msg = "Are you sure you want to delcare Emergency?";
if(confirm(msg))
	document.location.href=""+Link;
}
function movein()
{
var target_list = document.getElementById('target_list');;
var allocated_terminal = document.getElementById('allocatedTerminals');
var target_list_length = target_list.length;
for(var j=0; j<target_list_length; j++)
{
	if(target_list[j].selected)    //this is where im getting error msg 
	{
		var tmp = target_list.options[j].text;
		var tmp1 = target_list.options[j].value;
		target_list.remove(j);
		j--;
		var y=document.createElement('option');
		y.text=tmp;
		try
		{
		allocated_terminal.add(y,null);
		}
		catch(ex)
		{
		allocated_terminal.add(y);
		}
	}
}
}

function moveout()
{
var target_list = document.getElementById('target_list');
var allocated_terminal = document.getElementById('allocatedTerminals');
var allocated_terminal_length = allocated_terminal.length;
for(var j=0; j<allocated_terminal_length; j++)
{
	if(allocated_terminal[j].selected)    //this is where im getting error msg 
	{
		var tmp = allocated_terminal.options[j].text;
		var tmp1 = allocated_terminal.options[j].value;
		allocated_terminal.remove(j);
		j--;
		var y=document.createElement('option');
		y.text=tmp;
		try
		{
		target_list.add(y,null);
		}
		catch(ex)
		{
		target_list.add(y);	
		}

	}
}	
}

function disableItems(selectedItem)
{
if (selectedItem.value =='all')
	{
  			document.getElementById("target_list").disabled = true;
		document.getElementById("allocatedTerminals").disabled = true;

	}
else  if(selectedItem.value =='room')
	{
		document.getElementById("target_list").disabled = false;		
		document.getElementById("allocatedTerminals").disabled = false;

	}			
}
window.onload=function()
{
var targetType = '<? echo $target_type;?>';
if (targetType =='all')
	{
		document.getElementById("target_list").disabled = true;
		document.getElementById("allocatedTerminals").disabled = true;

	}
else  if(targetType =='room')
	{
		document.getElementById("target_list").disabled = false;		
		document.getElementById("allocatedTerminals").disabled = false;

	}		
}	


function sendemergency()
{
var len =document.form_allocate_terminals.target_type.length;
for (i=0;i<len;i++)
{
if(document.form_allocate_terminals.target_type.checked)
{
alert("Do you really want to send the emergency");
}
}
}
</script>
<?php

    $action =send;     
if ($btnSend ==$action)
{
	$pause = 5;
	$sqlMsg = "SELECT * FROM `".$DBTablesPrefix."_emergency_type`";
	$Infos = mysql_query($sqlMsg) or die("Query failed on line 55");
	$j = 0;
	while($Row_Infos = mysql_fetch_assoc($Infos))
	{	
		$j++;
		$Id= $Row_Infos['Id'];
		$msg= $Row_Infos['message'];
		if ($Id == $message)
		{
			$display_message = $msg;
		}	
	}
	$commandURL = "../emergency/simple_remote_control.php?message=".urlencode(stripslashes($display_message));
	$cmdOptions = "/PASSWORD \"".$aminoRemoteControlPassPhrase."\" /TIMEOUT 12 /THREADS 60 /PAUSE ".$pause." /QUIET";
	$cmdCommand = "/LOADURL ".EMERGENCY_PATH."simple_emergency_message.php"."?message=".urlencode(stripslashes($display_message));
	$cmdFile = "/FILE \"".$tIpListFiles[$TERM_TYPE_AMINET100][0]."\"";	
	if ($target_type == 'all')	
	{
		$sqlTerminals =	"SELECT IP, Room FROM `".$DBTablesPrefix."_stbs`"." 
		WHERE Version='AMINET110'  "."ORDER BY (Room+0)";
		$Infos = mysql_query($sqlTerminals) or die("Query failed on line 78");
		$i = 0;
		while($Row_Infos = mysql_fetch_assoc($Infos))
		{
		    $i++;
			$termIP 	= $Row_Infos['IP'];
			$termRoom 	= $Row_Infos['Room'];	
			$cmdLine 	= "AminoBatchControl.exe ".$cmdCommand." ".$cmdOptions." ".' TERMINALCHANGE '.$termIP;
			exec( $cmdLine, $cmdOutput);
		}	
	}

	else if ($target_type == 'room')	
	{
		for ($i = 0; $i< count($Room); $i++)
		{
			$sqlTerminals =	"SELECT IP, Room FROM `".$DBTablesPrefix."_stbs` ". "WHERE `Room` = '$Room[$i]'";		
			$Infos = mysql_query($sqlTerminals) or die("Query failed in line 95");
               	if ($sqlTerminals > 0)
			while($Row_Infos = mysql_fetch_assoc($Infos))
			{
				$IP_terminal 	= $Row_Infos['IP'];				
				$cmdLine = "AminoBatchControl.exe ".$cmdCommand." ".$cmdOptions." ".' TERMINALCHANGE '.$IP_terminal;
				//echo $cmdLine;
				exec( $cmdLine, $cmdOutput );
			}
		}		
	}
}
?>

Ken2k7 · May 17, 2009

Can you post lines 128 and 155 rather than all that?

document.getElementById() returns one result. As a general rule, you shouldn't have more than one of the same ID on the same page. It's HTML. Fix it or change it to a class.

bugfinder · May 17, 2009

Sure

function movein()
{
var target_list = document.getElementById('target_list');;
var allocated_terminal = document.getElementById('allocatedTerminals');
var target_list_length = target_list.length;
for(var j=0; j<target_list_length; j++)
{
	if(target_list[j].selected)    //this is where im getting error msg 
	{
		var tmp = target_list.options[j].text;
		var tmp1 = target_list.options[j].value;
		target_list.remove(j);
		j--;
		var y=document.createElement('option');
		y.text=tmp;
		try
		{
		allocated_terminal.add(y,null);
		}
		catch(ex)
		{
		allocated_terminal.add(y);
		}
	}
}
}

function moveout()
{
var target_list = document.getElementById('target_list');
var allocated_terminal = document.getElementById('allocatedTerminals');
var allocated_terminal_length = allocated_terminal.length;
for(var j=0; j<allocated_terminal_length; j++)
{
	if(allocated_terminal[j].selected)    //this is where im getting error msg 
	{
		var tmp = allocated_terminal.options[j].text;
		var tmp1 = allocated_terminal.options[j].value;
		allocated_terminal.remove(j);
		j--;
		var y=document.createElement('option');
		y.text=tmp;
		try
		{
		target_list.add(y,null);
		}
		catch(ex)
		{
		target_list.add(y);	
		}

	}
}	
}

i commented the line 128 and 155

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