i have created a page type where i am uploading an image and i am displaying it on the page but i need to resize the image not cropped because when i am croping it cropped the image in ratio which sometime result n a very bad image so i just want to resize the image not crop my code so far is

php page
<?php
class ProfilePage extends Page {
static $db = array(
);
static $has_one = array(
'Photo' => 'Image'
);

function getCMSFields() {
$fields = parent::getCMSFields();
$fields->addFieldToTab("Root.Content.Images", new ImageField('Photo'));
return $fields;
}

static $defaults = array(
'ShowInMenus' => false
);

}

class ProfilePage_Controller extends Page_Controller {

}
?>

template page

<% control Photo %>
<% control CroppedImage(540,340) %>
<img src ="$URL" alt="" />
<% end_control %>
<% end_control %>

thank you in advance

thanks a lot Willr
this is the document i was looking for .you have saved me thanks once again but i have encountered few problem on implementing the functions.

1. when i am calling the picture as simple variable it is showing up
code

$Photo

2.when I am calling it with SetWidth(80) it is working fine

code
$Photo.SetWidth(80)

3.but when i am calling it using SetSize(80,80) it is giving me error as

Missing argument 1 for Image::SetSize()
the code i have tried are

$Photo.SetSize(80 , 80)
$Photo.SetSize(80, 80)
$Photo.SetSize(80,80)

nothing is working

4.when i am calling it as PaddedImage(80, 80) i am getting this error

imagecreatetruecolor() [function.imagecreatetruecolor]: Invalid image dimensions

the code i have tried are
$Photo.PaddedImage(80, 80)
$Photo.PaddedImage(80,80)
$Photo.PaddedImage(80 , 80)

Thank you in advance

Try <% control Photo %>$PaddedImage(80,80)<% end_control %> or even <% control Photo %><% control PaddedImage(80, 80) %>$URL<% end_control %><% end_control %> and see if either of those work (The template parser is a bit hit and miss like this).