delete from db problem

i checked but the problem is that it deleted now ok but the last record in the db it didnot delete what i said it to delete
here is the update of my code

<?
function managelinks_block($op = 'list', $delta = 0, $edit = array()) 
{  
global $base_url;
if ($op == "list") 
{
    // Generate listing of blocks from this module, for the admin/block page
    $block = array();
    $block[0]["info"] = t('Manage Link Block');
    return $block;
  } 
  
else if ($op == 'view') 
{

   $query = "SELECT title, url FROM managelinks";
   $queryResult =  db_query($query);
   
   $path_self = "/" . drupal_lookup_path('alias', $_GET['q']);
   $block_content = "<div align=\"center\"><form name=\"makechange\" id=\"f1\" method=\"get\" action=\"" . $base_url . $path_self . "\" />\r";
   $block_content .='<table id="t" border=3>';

  while ($links = db_fetch_object($queryResult)) 
  {
   $block_content .='<tr><td><input type="textbox" name="ti" value="'.$links->title.'" readonly="readonly"></td>';
   $block_content .='<td><input type="textbox" name="ur" value="'.$links->url.'" readonly="readonly"></td>';
   $block_content .='<td><input type="submit" name="Edit" value="Edit"></td>';			
   $block_content .=   '<td><input type="submit" name="delete" value="Delete"> <INPUT TYPE="hidden"  name="delete" VALUE="'.$links->title.'"></td>';
	$block_content .='</br>';
	$block_content .=   '</tr>';   
  }
  
  $block_content .='</table></form></div>';
  $block_content .='<td><input type="button" name="ADD" value="ADD" onclick=add("t") ></td>';


}



if ($block_content == '')
 {    
    /* No content from a week ago.  If we return nothing, the block   
     * doesn't show, which is what we want. 
     */
    return;
  }

  // set up the block  
  $block = array();
  $block['subject'] = 'Manage Your Links';  
  $block['content'] = $block_content;
  
return $block;

} // end function


  ?>
  

<script language="javascript">
var count = "1";
	function add(t)
	{
				 									
                     var tbody = document.getElementById("t").getElementsByTagName("TBODY")[0];
					 
                     // create row
                     var row = document.createElement("TR");
                    
                    // create table cell 1 ----- title
                     var td1= document.createElement("TD")
                     var strHtml1= "<INPUT TYPE=\"text\" NAME=\"ti\">";
                    td1.innerHTML = strHtml1.replace(/!count!/g,count);
					
					
					// create table cell 2 ----- url
                     var td2 = document.createElement("TD")
                     var strHtml2 = "<INPUT TYPE=\"text\" NAME=\"ur\">";
                    td2.innerHTML = strHtml2.replace(/!count!/g,count);
									
					
                 
					
					var td3 = document.createElement("TD")
                    var strHtml3 = "<INPUT TYPE=\"submit\"  VALUE=\"Save\"   ><INPUT TYPE=\"hidden\"  name=\"insert\" VALUE=\"insert\">";
                    td3.innerHTML = strHtml3.replace(/!count!/g,count);
					
					
					
                    // append data to row
                        row.appendChild(td1);
                        row.appendChild(td2);
                        row.appendChild(td3);
                  
                        
		               // add to count variable
                          count = parseInt(count) + 1;
                     // append row to table
                           tbody.appendChild(row);	
						  
	}
	
	
</script>

<?
if ($_GET[insert]=="insert") 
{

  $query2 = "INSERT INTO managelinks (title ,url )VALUES ('".$_GET[ti]."', '".$_GET[ur]."')";
  $queryResult2 = db_query($query2);
  if($queryResult2) 
  {
  drupal_set_message(t("added ok"));
  }
}

else if ($_GET[delete]) 
{


 $query3 = "delete from managelinks where title='$_GET[ti]'";

 drupal_set_message( $query3);
  $queryResult3 = db_query($query3);
  if($queryResult3) 
  {
  drupal_set_message(t("Deleted ok"));
  }
}
?>