cant show the image after upload it

//inside banners_controller.php

<?php
class BannersController extends AppController {
var $name = 'Banners';

function addbanner() {
$this->set('showImage', 1);
if(!empty($this->data)){
$screenshotError0 = $this->data['Banner']['0']['screenshot']
['error'];
$mimeType = trim($this->data['Banner']['0']
['screenshot']['type']);

if ($screenshotError0 == 0) {
$screenshot = new File($this->data['Banner']['0']
['screenshot']['tmp_name']);

if (!strstr($mimeType,'image')) {
$this->set('error', 'Unsupported screenshot format
or filesize too large.');
} else {
$fileName0 = $this->data['Banner']['0']
['screenshot']['name'];
$fileName1 = $this->data['Banner']['1']
['screenshot']['name'];
$uploadFolder0 = 'files/'.$fileName0;
$uploadFolder1 = 'files/'.$fileName1;
move_uploaded_file($this->data['Banner']['0']
['screenshot']['tmp_name'],$uploadFolder0);
move_uploaded_file($this->data['Banner']['1']
['screenshot']['tmp_name'],$uploadFolder1);
if(file_exists($uploadFolder0)) {
$this->set('image0',$fileName0);
$this->set('image1',$fileName1);

/* ADD THESE LINES IN YOUR CODE*/
$this->data['Banner']['name'] = '';
$this->data['Banner']['screenshot'] =
$fileName0;
$this->data['Banner']['screenshot1'] = $fileName1;
//$this->data['Banner']['link'] = $fileName0;
$this->data['Banner']['link1'] = $uploadFolder0;
$this->data['Banner']['link2'] = $uploadFolder1;
$this->data['Banner']['date_posted'] = time();
$this->Banner->create();
/* ADD THESE LINES IN YOUR CODE*/

$this->Banner->save($this->data);
//$this->set('showImage', 1);
$this->redirect
(array('controller'=>'logins','action'=>'addbanner'));
}
}

if (!empty($fileName0)) {
$this->data['Banner']['screenshot_path'] =
$uploadFolder0;
} else {
$this->data['Banner']['screenshot_path'] = '';
}
}
}
$this->set('banners', $this->Banner->find('all'));

$this ->render('/logins/resources/banners/addbanner');
}
function deletebanner($image = null) {
if (!$image) {
$this->set('errMsg', 'sorry invalid link');
} else {
unlink("files/{$image}");
//$this->redirect('/uploads/index');
}
}

}

?>

//inside addbanner.ctp

<?php echo $this->element('top_nav1'); ?>

<fieldset width="100%" align="center" cellpadding="0" cellspacing="0"
border="0" class="header">
<table align="center" width="100%" border="0" cellpadding="0"
cellspacing="0">
<tr>

<td align="center" valign="top">
<table width="100%" cellpadding="2" cellspacing="2"
border="0">
<tr>
<td colspan="4" height="32" class="content_text2"
align="center" bgcolor="#CCCCCC" valign="middle">
<b>RESOURCE CENTRE BANNER </b></td>
</tr>

<tr>
<td align='left' class='text2'>

*Indicate required fields </td>
</tr>

<?php echo $this->Form->create('Banner',
array('action'=>'addbanner','type'=>'file'));?>
<tr height='100'>

<td>
<?php
echo $form->create('Banner', array('action' => 'addbanner', 'type'
=> 'file'));
echo $form->input('Banner.
0.screenshot',array('type'=>'file','label'=>'Right Banner 1 Photo:'));

if(($showImage==1)&&(!empty($image0))) {

debug($image0);die();

} ?>
<?php echo $this->Form->input('link1',
array('label'=>'Right Banner 1 Link: ','style' => 'width:180px;'));?>
</td>
</tr>
<tr>
<th colspan="2" background="<?php echo $this->webroot; ?
>images/line02.gif" style="background-repeat:repeat-x;">
<img src="<?php echo $this->webroot; ?>images/
space.gif" width="20" height="10"/>

</th>
</tr>

<tr height='20'><td></td></tr>
<tr>

<td>
<?php
echo $form->input('Banner.
1.screenshot',array('type'=>'file','label'=>'Right Banner 2 Photo:'));

if(($showImage==1)&&(!empty($image1))) {

debug($image1);die();
//echo $html->image('files/'.$image1);
//echo $html->link('delete','/delete/'.$image1);
} ?>
</td>
</tr>

<tr><td>
<?php echo $this->Form->input('link2',
array('label'=>'Right Banner 2 Link: ','style' => 'width:180px;'));?>

</td></tr>

<tr>
<th colspan="2" background="<?php echo $this->webroot; ?
>images/line02.gif" style="background-repeat:repeat-x;">
<img src="<?php echo $this->webroot; ?>images/
space.gif" width="20" height="10"/>

</th>
</tr>

<tr>
<td></td>
</tr>

<tr ><table width="60%" align="left" border="0" ><tr>
<td width="20%"align="right"><?php echo $this->Form-
>button('Reset', array('type'=>'reset'));?></td>
<td width="20%" align='left'><?php echo $form-
>end(__('Submit', true)); ?></td>
</tr>

</table>
</tr>

</table>
</tr>

</table>

</fieldset>

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