drupal_add_css的使用

API：http://api.drupal.org/api/function/drupal_add_css

drupal_add_css($path = NULL, $type = 'module', $media = 'all', $preprocess = TRUE)

增加CSS文件到风格队列

参数：

$path (可选的)，CSS文件路径是相对base_path()，例如：/modules/devel/devel.css

$type (可选的)，module 或 theme

$media (可选的) ，例如：all, print, screen.

$preprocess (可选的) Should this CSS file be aggregated and compressed if this feature has been turned on under the performance section?（看不懂）

例子：

function tagadelic_init() { drupal_add_css(drupal_get_path('module', 'tagadelic') .'/tagadelic.css'); }