How do I resolve this error?

[vikingltd]

Am getting the error that says "
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Notice: Undefined index: text1
"
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<div class="formRow">
<div class="grid2"><label><?php echo $lang['Timezone']; ?>:</label></div>
<div class="grid10">
<?php
$query_timezone1=mysql_query("SELECT * FROM tbl_timezone WHERE id!='$db_timezone_id' ORDER BY timezone ASC");
$option_timezone1="";
while($row=mysql_fetch_array($query_timezone1)) {
$option_timezone1 .= "<option value='$row[id]'";
$option_timezone1 .= ">". $row['text1'] ." ". $row['timezone'] ."</option>"; }
?>
<select name="timezone" id="timezone" data-placeholder="Choose" class="select" tabindex="2" style="width:100%;">
<?php if($db_timezone_id!=0){echo "<option value='$db_timezone_id'>$db_timezone_code1 $db_timezone_timezone</option>"; }else{echo"<option value=''></option> ";}?>
<?php echo $option_timezone1; ?>
</select>
</div>
</div>