Su dung tham so trong joomla

<params>
<param name="css" type="textarea" default="" cols="40" rows="10" label="CSS" description=" Tao CSS" />
</params>

Trong file giavang.xml co cau hinh nhu the.
* Trong mod_giavang:

$css = $params->get( 'css', $css );

+ Tham so dau: name cua param.
+ Tham so 2: gia tri mac dinh.

$css = '<STYLE TYPE="text/css" MEDIA=screen>
.gia_vang_table { background-color: blue; }
.gia_vang_name  { text-align:center; width:30px; }
.gia_vang_value  { text-align:right; margin-right:2px; width:60px;}
.gia_vang_source  { text-align:justify; font-style:italic;}</STYLE>';

* Trong tmpl/default.php:

echo $css;