A relative reference ( &quot; graphic/picture.gif &quot; ) is only possible when both files exist on the same drive. If the files are on different drives in your local file system, the absolute reference follows the &quot; file: &quot; protocol ( &quot; file:///data1/xyz/picture.gif &quot; ). If the files are on different servers or if the target of the link is not available, the absolute reference uses the &quot; http: &quot; protocol ( &quot; http://data2/abc/picture.gif &quot; ). Be sure to organise all files for your homepage on the same drive as the start file of the homepage.
有下列规则：一个相对地址( &quot; graphics/picture.gif &quot; )只有当两个文件存放在同一个驱动盘上时才能采用。如果两个文件存放在不同的驱动盘上，但在本机文件系统中，那么要采用一个符合 &quot; file: &quot; 协议 ( &quot; file:///data1/xyz/picture.gif &quot; )的绝对地址。如果两个文件存放在不同的服务器上，或是当前超链接的目标不存在，那么要采用一个符合 &quot; http: &quot; 协议( &quot; http://data2/abc/picture.gif &quot; )的绝对地址。