论坛首页 $forum[icon]版块图片大小和标识
默认大小为80px
source\function\function_forumlist.php
$forum[‘icon’] = ‘<a href=”forum.php?mod=forumdisplay&fid=’.$forum[‘fid’].'”><img src=”‘.$forum[‘icon’].'” align=”left” alt=”‘.$forum[‘name’].'” style=”width: ‘.$forum[extra][iconwidth].’px;height: ‘.$forum[extra][iconwidth].’px;”/></a>’;
