No data from second list

I modified the code to reflect my tables.
Here is the code:

@$id=$HTTP_GET_VARS['D_ID'];

///@$id=$_GET['D_ID']; // Use this line or below line if register_global is off

if(strlen($id) > 0 and !is_numeric($id)){ // to check if $cat is numeric data or not. 

echo "Data Error";

exit;

}



///////// Getting the data from Mysql table "Directory" for first list box//////////

$quer2=mysql_query("SELECT DISTINCT directory, D_ID FROM directory order by directory"); 

///////////// End of query for first list box////////////



/////// for second drop down list we will check if "D_ID" is selected else we will display all the "Names"///// 

if(isset($id) and strlen($id) > 0){

$quer=mysql_query("SELECT DISTINCT name FROM images where D_ID=$id order by name"); 

}else{$quer=mysql_query("SELECT DISTINCT name FROM images order by name"); } 

////////// end of query for second image drop down list box ///////////////////////////



echo "<form method=post name=f1 action='dd-check.php'>";



/// Add your form processing page address to action in above line. Example  action=dd-check.php////

//////////        Starting of first drop downlist /////////

echo "<select name='id' onchange=\"reload(this.form)\"><option value=''>Select one</option>";

while($noticia2 = mysql_fetch_array($quer2)) { 

if($noticia2['D_ID']==@$id){echo "<option selected value='$noticia2[D_ID]'>$noticia2[directory]</option>"."<BR>";}

else{echo  "<option value='$noticia2[D_ID]'>$noticia2[directory]</option>";}

}

echo "</select>";

//////////////////  This will end the first drop down list ///////////



//////////        Starting of second drop downlist /////////

echo "<select name='image'><option value=''>Select one</option>";

while($noticia = mysql_fetch_array($quer)) { 

echo  "<option value='$noticia[I_ID]'>$noticia[name]</option>";

}

echo "</select>";

//////////////////  This will end the second drop down list ///////////

//// Add your other form fields as needed here/////

echo "<input type=submit value=Submit>";

echo "</form>";

dd-check tells me that I have empty set.

Value of $id =
Value of $image =

I can't seem to get the following line to get data.

$quer=mysql_query("SELECT DISTINCT name FROM images where D_ID=$id order by name");

Can you see my mistake?
Thanks for the help.