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Create Php Login Error Message Alert

Posted on 2008-06-24
6
Medium Priority
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1,503 Views
Last Modified: 2012-05-05
Hello

Can anyone show me how to alert a user to enter a username & password or alert them to the fact that their username/password is incorrect please?

txt file attached admin_login.php

Thanks


php-login-page.txt
0
Comment
Question by:kevinb4940
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6 Comments
 
LVL 14

Accepted Solution

by:
Ali Kayahan earned 2000 total points
ID: 21856407

<?php require_once('Connections/mcm_listings_db.php'); ?>
<?php
if (!function_exists("GetSQLValueString")) {
function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "") 
{
  $theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
 
  $theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);
 
  switch ($theType) {
    case "text":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;    
    case "long":
    case "int":
      $theValue = ($theValue != "") ? intval($theValue) : "NULL";
      break;
    case "double":
      $theValue = ($theValue != "") ? "'" . doubleval($theValue) . "'" : "NULL";
      break;
    case "date":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;
    case "defined":
      $theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
      break;
  }
  return $theValue;
}
}
?>
<?php
// *** Validate request to login to this site.
if (!isset($_SESSION)) {
  session_start();
}
 
$loginFormAction = $_SERVER['PHP_SELF'];
if (isset($_GET['accesscheck'])) {
  $_SESSION['PrevUrl'] = $_GET['accesscheck'];
}
 
if (isset($_POST['name'])) {
  $loginUsername=$_POST['name'];
  $password=$_POST['password'];
  $MM_fldUserAuthorization = "";
  $MM_redirectLoginSuccess = "admin_home.php";
  $MM_redirectLoginFailed = "admin_login.php";
  $MM_redirecttoReferrer = false;
  mysql_select_db($database_mcm_listings_db, $mcm_listings_db);
  
  $LoginRS__query=sprintf("SELECT name, password FROM `admin` WHERE name=%s AND password=%s",
    GetSQLValueString($loginUsername, "text"), GetSQLValueString($password, "text")); 
   
  $LoginRS = mysql_query($LoginRS__query, $mcm_listings_db) or die(mysql_error());
  $loginFoundUser = mysql_num_rows($LoginRS);
  if ($loginFoundUser) {
     $loginStrGroup = "";
    
    //declare two session variables and assign them
    $_SESSION['MM_Username'] = $loginUsername;
    $_SESSION['MM_UserGroup'] = $loginStrGroup;	      
 
    if (isset($_SESSION['PrevUrl']) && false) {
      $MM_redirectLoginSuccess = $_SESSION['PrevUrl'];	
    }
    header("Location: " . $MM_redirectLoginSuccess );
  }
  else {
   echo "Your user name or password is incorrect" ; 
    #header("Location: ". $MM_redirectLoginFailed );
  }
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
 
<title>Donegal Real Estate MCM</title>
 
<link href="mcm.css" rel="stylesheet" type="text/css" />
<script type="text/javascript">
<!--
function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}
//-->
</script>
</head>
 
<body>
<div id="wrapper">
<table width="800" align="center">
  <tr>
    <td valign="top">
	<table width="800"  border="0" class="boxes">
      <tr>
        <td class="logo" width="714" >&nbsp;</td>
        <td width="86">
          <div align="right"><img src="images/corner-image.gif" alt="" width="85" height="75" /></div></td>
      </tr>
      <tr>
        <td height="24" colspan="2" align="center"><div id="navigation">
            <ul>
              <li><a href="index.php">Home</a></li>
|
<li><a href="contact.php">Contact</a></li>
|
<li><a href="services.php" class="tablerow">Services</a></li>
|
<li><a href="residential.php" class="tablerow">Residential Property</a></li>
|
<li><a href="newhomes.php">New Homes</a></li>
|
<li><a href="saleagreed.php">Sale Agreed</a></li>
|
<li><a href="commercial.php">Commercial Property</a></li>
|
<li><a href="land.php">Land/Sites</a></li>
</ul>
        </div></td>
      </tr>
      <tr>        </tr>
      <tr>
        <td height="86" colspan="2" valign="top">
		<table width="804" >
          <tr>          </tr>
          <tr>            </tr>
          <tr>          </tr>
          <tr>          </tr>
          
          
          <tr>          </tr>
          <tr>            </tr>
        </table>
		<table width="800" border="0">
          <tr>
           
            <td width="181" align="center" valign="top" class="leftcol">
              
             <form METHOD="POST" name="form1" id="form1">
                          <p class="titletext">Property Search                             </p>
                          
                            <select name="menu1" onchange="MM_jumpMenu('parent',this,0)">
                              <option value="#" selected="selected">Property Type</option>
                              <option value="residential.php">Residential </option>
                              <option value="newhomes.php">New Homes</option>
                              <option value="saleagreed.php">Sale Agreed </option>
                              <option value="commercial.php">Commercial</option>
                              <option value="land.php">Land / Sites</option>
                            </select>
                  </form><br />
              <p class="titletext">Site Search</p>
             
                <p>
                  <select name="menu2" onchange="MM_jumpMenu('parent',this,0)">
                    <option selected="selected">Please Select</option>
                    <option value="sales.php">Property Sales</option>
                    <option value="architecture.php">Architecture</option>
                    <option value="auctioneering.php">Auctioneering</option>
                    <option value="valuation.php">Valuation</option>
                    <option value="valuation.php">Surveying</option>
                      </select>
                </p>
                <p class="titletext">Contact Us</p>
                <p class="address">McM Auctioneers </p>
                <p class="address">Meetinghouse Street</p>
                <p class="address">Raphoe </p>
                <p class="address">County Donegal</p>
                <p class="address">Tel: 07491 45400</p>
                <p class="address">Fax: 074991 45437</p>
                <p class="address">Mobile: 087 288 7639</p>
				<p class="address">(Dial 00353 from UK)</p>
                <br />
                <p class="address">Click Below to Email </p>
                <p align="center"><a href="mailto:mcmauctioneers@eircom.net"><img src="/images/redmail.jpg" alt="" width="60" height="30" class="email" /></a></p>                
                <p>&nbsp; </p></td>
			
			
            <td width="602" rowspan="4" valign="top">              <div id="center_content">
                <p align="left" class="text">Admin Login</p>
                  <form id="form2" name="form2" method="POST" action="<?php echo $loginFormAction; ?>">
                    <table border="0" cellspacing="0" cellpadding="0">
                      <tr>
                        <td>Username</td>
                        <td>&nbsp;<input type="text" name="name" id="name" /></td>
                      </tr>
                      <tr>
                        <td>Password</td>
                        <td>&nbsp;<input type="password" name="password" id="password" /></td>
                      </tr>
                      <tr>
                        <td>&nbsp;</td>
                        <td><input type="submit" name="submit" id="submit" value="Submit" /></td>
                      </tr>
                      </table>
                                </form>
                  <p align="left" class="text">&nbsp;</p>
              </div></td>
          </tr>
        </table></td>
      </tr>
    </table></td>
  </tr>
</table>
<div class="footer"><a href="admin_login.php">Admin login</a>  | © Copyright 2007 | Site Design by Kevin Blakely| info@onevisionwebdesign.co.uk| www.onevisionwebdesign.co.uk </div>
</div>
</body>
</html>

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Author Comment

by:kevinb4940
ID: 21856546
Thanks a lot

There is slight problem though. The error message appears outside the table.

Sorry for being so fussy!
0
 

Author Comment

by:kevinb4940
ID: 21856570
Sorry Again

I just realised that you cannot see the page
http://www.donegalrealestate.com/admin_login.php
0
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LVL 14

Assisted Solution

by:Ali Kayahan
Ali Kayahan earned 2000 total points
ID: 21856618
Can you please try
<?php require_once('Connections/mcm_listings_db.php'); ?>
<?php
if (!function_exists("GetSQLValueString")) {
function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "") 
{
  $theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
 
  $theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);
 
  switch ($theType) {
    case "text":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;    
    case "long":
    case "int":
      $theValue = ($theValue != "") ? intval($theValue) : "NULL";
      break;
    case "double":
      $theValue = ($theValue != "") ? "'" . doubleval($theValue) . "'" : "NULL";
      break;
    case "date":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;
    case "defined":
      $theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
      break;
  }
  return $theValue;
}
}
?>
<?php
// *** Validate request to login to this site.
if (!isset($_SESSION)) {
  session_start();
}
 
$loginFormAction = $_SERVER['PHP_SELF'];
if (isset($_GET['accesscheck'])) {
  $_SESSION['PrevUrl'] = $_GET['accesscheck'];
}
 
if (isset($_POST['name'])) {
  $loginUsername=$_POST['name'];
  $password=$_POST['password'];
  $MM_fldUserAuthorization = "";
  $MM_redirectLoginSuccess = "admin_home.php";
  $MM_redirectLoginFailed = "admin_login.php";
  $MM_redirecttoReferrer = false;
  mysql_select_db($database_mcm_listings_db, $mcm_listings_db);
  
  $LoginRS__query=sprintf("SELECT name, password FROM `admin` WHERE name=%s AND password=%s",
    GetSQLValueString($loginUsername, "text"), GetSQLValueString($password, "text")); 
   
  $LoginRS = mysql_query($LoginRS__query, $mcm_listings_db) or die(mysql_error());
  $loginFoundUser = mysql_num_rows($LoginRS);
  if ($loginFoundUser) {
     $loginStrGroup = "";
    
    //declare two session variables and assign them
    $_SESSION['MM_Username'] = $loginUsername;
    $_SESSION['MM_UserGroup'] = $loginStrGroup;	      
 
    if (isset($_SESSION['PrevUrl']) && false) {
      $MM_redirectLoginSuccess = $_SESSION['PrevUrl'];	
    }
    header("Location: " . $MM_redirectLoginSuccess );
  }
  else {
   $message = "Your user name or password is incorrect" ; 
    #header("Location: ". $MM_redirectLoginFailed );
  }
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
 
<title>Donegal Real Estate MCM</title>
 
<link href="mcm.css" rel="stylesheet" type="text/css" />
<script type="text/javascript">
<!--
function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}
//-->
</script>
</head>
 
<body>
<div id="wrapper">
<table width="800" align="center">
	<tr><?php empty($message) ? echo $message : true ?></tr>
  <tr>
    <td valign="top">
	<table width="800"  border="0" class="boxes">
      <tr>
        <td class="logo" width="714" >&nbsp;</td>
        <td width="86">
          <div align="right"><img src="images/corner-image.gif" alt="" width="85" height="75" /></div></td>
      </tr>
      <tr>
        <td height="24" colspan="2" align="center"><div id="navigation">
            <ul>
              <li><a href="index.php">Home</a></li>
|
<li><a href="contact.php">Contact</a></li>
|
<li><a href="services.php" class="tablerow">Services</a></li>
|
<li><a href="residential.php" class="tablerow">Residential Property</a></li>
|
<li><a href="newhomes.php">New Homes</a></li>
|
<li><a href="saleagreed.php">Sale Agreed</a></li>
|
<li><a href="commercial.php">Commercial Property</a></li>
|
<li><a href="land.php">Land/Sites</a></li>
</ul>
        </div></td>
      </tr>
      <tr>        </tr>
      <tr>
        <td height="86" colspan="2" valign="top">
		<table width="804" >
          <tr>          </tr>
          <tr>            </tr>
          <tr>          </tr>
          <tr>          </tr>
          
          
          <tr>          </tr>
          <tr>            </tr>
        </table>
		<table width="800" border="0">
          <tr>
           
            <td width="181" align="center" valign="top" class="leftcol">
              
             <form METHOD="POST" name="form1" id="form1">
                          <p class="titletext">Property Search                             </p>
                          
                            <select name="menu1" onchange="MM_jumpMenu('parent',this,0)">
                              <option value="#" selected="selected">Property Type</option>
                              <option value="residential.php">Residential </option>
                              <option value="newhomes.php">New Homes</option>
                              <option value="saleagreed.php">Sale Agreed </option>
                              <option value="commercial.php">Commercial</option>
                              <option value="land.php">Land / Sites</option>
                            </select>
                  </form><br />
              <p class="titletext">Site Search</p>
             
                <p>
                  <select name="menu2" onchange="MM_jumpMenu('parent',this,0)">
                    <option selected="selected">Please Select</option>
                    <option value="sales.php">Property Sales</option>
                    <option value="architecture.php">Architecture</option>
                    <option value="auctioneering.php">Auctioneering</option>
                    <option value="valuation.php">Valuation</option>
                    <option value="valuation.php">Surveying</option>
                      </select>
                </p>
                <p class="titletext">Contact Us</p>
                <p class="address">McM Auctioneers </p>
                <p class="address">Meetinghouse Street</p>
                <p class="address">Raphoe </p>
                <p class="address">County Donegal</p>
                <p class="address">Tel: 07491 45400</p>
                <p class="address">Fax: 074991 45437</p>
                <p class="address">Mobile: 087 288 7639</p>
				<p class="address">(Dial 00353 from UK)</p>
                <br />
                <p class="address">Click Below to Email </p>
                <p align="center"><a href="mailto:mcmauctioneers@eircom.net"><img src="/images/redmail.jpg" alt="" width="60" height="30" class="email" /></a></p>                
                <p>&nbsp; </p></td>
			
			
            <td width="602" rowspan="4" valign="top">              <div id="center_content">
                <p align="left" class="text">Admin Login</p>
                  <form id="form2" name="form2" method="POST" action="<?php echo $loginFormAction; ?>">
                    <table border="0" cellspacing="0" cellpadding="0">
                      <tr>
                        <td>Username</td>
                        <td>&nbsp;<input type="text" name="name" id="name" /></td>
                      </tr>
                      <tr>
                        <td>Password</td>
                        <td>&nbsp;<input type="password" name="password" id="password" /></td>
                      </tr>
                      <tr>
                        <td>&nbsp;</td>
                        <td><input type="submit" name="submit" id="submit" value="Submit" /></td>
                      </tr>
                      </table>
                                </form>
                  <p align="left" class="text">&nbsp;</p>
              </div></td>
          </tr>
        </table></td>
      </tr>
    </table></td>
  </tr>
</table>
<div class="footer"><a href="admin_login.php">Admin login</a>  | © Copyright 2007 | Site Design by Kevin Blakely| info@onevisionwebdesign.co.uk| www.onevisionwebdesign.co.uk </div>
</div>
</body>
</html>

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0
 
LVL 14

Expert Comment

by:Ali Kayahan
ID: 21856628
Which page you mean ?
0
 
LVL 14

Expert Comment

by:Ali Kayahan
ID: 21856665
The one below should work
<?php require_once('Connections/mcm_listings_db.php'); ?>
<?php
if (!function_exists("GetSQLValueString")) {
function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "") 
{
  $theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
 
  $theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);
 
  switch ($theType) {
    case "text":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;    
    case "long":
    case "int":
      $theValue = ($theValue != "") ? intval($theValue) : "NULL";
      break;
    case "double":
      $theValue = ($theValue != "") ? "'" . doubleval($theValue) . "'" : "NULL";
      break;
    case "date":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;
    case "defined":
      $theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
      break;
  }
  return $theValue;
}
}
?>
<?php
// *** Validate request to login to this site.
if (!isset($_SESSION)) {
  session_start();
}
 
$loginFormAction = $_SERVER['PHP_SELF'];
if (isset($_GET['accesscheck'])) {
  $_SESSION['PrevUrl'] = $_GET['accesscheck'];
}
 
if (isset($_POST['name'])) {
  $loginUsername=$_POST['name'];
  $password=$_POST['password'];
  $MM_fldUserAuthorization = "";
  $MM_redirectLoginSuccess = "admin_home.php";
  $MM_redirectLoginFailed = "admin_login.php";
  $MM_redirecttoReferrer = false;
  mysql_select_db($database_mcm_listings_db, $mcm_listings_db);
  
  $LoginRS__query=sprintf("SELECT name, password FROM `admin` WHERE name=%s AND password=%s",
    GetSQLValueString($loginUsername, "text"), GetSQLValueString($password, "text")); 
   
  $LoginRS = mysql_query($LoginRS__query, $mcm_listings_db) or die(mysql_error());
  $loginFoundUser = mysql_num_rows($LoginRS);
  if ($loginFoundUser) {
     $loginStrGroup = "";
    
    //declare two session variables and assign them
    $_SESSION['MM_Username'] = $loginUsername;
    $_SESSION['MM_UserGroup'] = $loginStrGroup;	      
 
    if (isset($_SESSION['PrevUrl']) && false) {
      $MM_redirectLoginSuccess = $_SESSION['PrevUrl'];	
    }
    header("Location: " . $MM_redirectLoginSuccess );
  }
  else {
   $message = "Your user name or password is incorrect" ; 
    #header("Location: ". $MM_redirectLoginFailed );
  }
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
 
<title>Donegal Real Estate MCM</title>
 
<link href="mcm.css" rel="stylesheet" type="text/css" />
<script type="text/javascript">
<!--
function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}
//-->
</script>
</head>
 
<body>
<div id="wrapper">
<table width="800" align="center">
  <tr>
    <td valign="top">
	<table width="800"  border="0" class="boxes">
      <tr>
        <td class="logo" width="714" >&nbsp;</td>
        <td width="86">
          <div align="right"><img src="images/corner-image.gif" alt="" width="85" height="75" /></div></td>
      </tr>
      <tr>
        <td height="24" colspan="2" align="center"><div id="navigation">
            <ul>
              <li><a href="index.php">Home</a></li>
|
<li><a href="contact.php">Contact</a></li>
|
<li><a href="services.php" class="tablerow">Services</a></li>
|
<li><a href="residential.php" class="tablerow">Residential Property</a></li>
|
<li><a href="newhomes.php">New Homes</a></li>
|
<li><a href="saleagreed.php">Sale Agreed</a></li>
|
<li><a href="commercial.php">Commercial Property</a></li>
|
<li><a href="land.php">Land/Sites</a></li>
</ul>
        </div></td>
      </tr>
      <tr>        </tr>
      <tr>
        <td height="86" colspan="2" valign="top">
		<table width="804" >
          <tr>          </tr>
          <tr>            </tr>
          <tr>          </tr>
          <tr>          </tr>
          
          
          <tr>          </tr>
          <tr>            </tr>
        </table>
		<table width="800" border="0">
          <tr>
           
            <td width="181" align="center" valign="top" class="leftcol">
              
             <form METHOD="POST" name="form1" id="form1">
                          <p class="titletext">Property Search                             </p>
                          
                            <select name="menu1" onchange="MM_jumpMenu('parent',this,0)">
                              <option value="#" selected="selected">Property Type</option>
                              <option value="residential.php">Residential </option>
                              <option value="newhomes.php">New Homes</option>
                              <option value="saleagreed.php">Sale Agreed </option>
                              <option value="commercial.php">Commercial</option>
                              <option value="land.php">Land / Sites</option>
                            </select>
                  </form><br />
              <p class="titletext">Site Search</p>
             
                <p>
                  <select name="menu2" onchange="MM_jumpMenu('parent',this,0)">
                    <option selected="selected">Please Select</option>
                    <option value="sales.php">Property Sales</option>
                    <option value="architecture.php">Architecture</option>
                    <option value="auctioneering.php">Auctioneering</option>
                    <option value="valuation.php">Valuation</option>
                    <option value="valuation.php">Surveying</option>
                      </select>
                </p>
                <p class="titletext">Contact Us</p>
                <p class="address">McM Auctioneers </p>
                <p class="address">Meetinghouse Street</p>
                <p class="address">Raphoe </p>
                <p class="address">County Donegal</p>
                <p class="address">Tel: 07491 45400</p>
                <p class="address">Fax: 074991 45437</p>
                <p class="address">Mobile: 087 288 7639</p>
				<p class="address">(Dial 00353 from UK)</p>
                <br />
                <p class="address">Click Below to Email </p>
                <p align="center"><a href="mailto:mcmauctioneers@eircom.net"><img src="/images/redmail.jpg" alt="" width="60" height="30" class="email" /></a></p>                
                <p>&nbsp; </p></td>
			<td><?php !empty($message) ? echo $message : true ?></td>
			
            <td width="602" rowspan="4" valign="top">              <div id="center_content">
                <p align="left" class="text">Admin Login</p>
                  <form id="form2" name="form2" method="POST" action="<?php echo $loginFormAction; ?>">
                    <table border="0" cellspacing="0" cellpadding="0">
                      <tr>
                        <td>Username</td>
                        <td>&nbsp;<input type="text" name="name" id="name" /></td>
                      </tr>
                      <tr>
                        <td>Password</td>
                        <td>&nbsp;<input type="password" name="password" id="password" /></td>
                      </tr>
                      <tr>
                        <td>&nbsp;</td>
                        <td><input type="submit" name="submit" id="submit" value="Submit" /></td>
                      </tr>
                      </table>
                                </form>
                  <p align="left" class="text">&nbsp;</p>
              </div></td>
          </tr>
        </table></td>
      </tr>
    </table></td>
  </tr>
</table>
<div class="footer"><a href="admin_login.php">Admin login</a>  | © Copyright 2007 | Site Design by Kevin Blakely| info@onevisionwebdesign.co.uk| www.onevisionwebdesign.co.uk </div>
</div>
</body>
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