r1.css : Macintosh IE4.0以上,Macintosh Netscape4.0以上,Netscape5.0以上,
X11 Netscape5.0以上 (Xwindows for linux or unix,I guest )
ie6.css: Windows IE4.0以上,
ns1.css: 其他操作系统Netscape4.0以上
ie1.css: 其他操作系统IE4.0以上
我分别在Windows XP+IE6.0和Linux Rat hat 7.1+NS4.7两个环境下测试了这四个样式表,在IE6里四个样式表
作为一个规范的页面,详尽的META内容是必不可少的,这一点IBM一直做得很好,我们可以回顾一下其99年页面里的META内容:
<meta content="ibm international business machines internet" name="keywords">
<meta content="http://www.ibm.com/" name="alias">
<meta content="webmaster@www.ibm.com" name="owner">
<meta
content="The IBM corporate home page, entry point to information about IBM products and services"
name="description">
<meta
content="(PICS-1.1 "http://www.rsac.org/ratingsv01.html"; l gen true comment "RSACi
North America Server" by "epc@www.ibm.com"; for "http://www.ibm.com/"; on
"1997.07.05T21:46-0500" r (n 0 s 0 v 0 l 0))"
http-equiv="PICS-Label">
<meta
content="(PICS-1.0 "http://www.classify.org/safesurf/"; l gen true for
"http://www.ibm.com/"; by "epc@www.ibm.com"; r (SS~~000 1 SS~~100 1))"
http-equiv="PICS-Label">
今天的IBM页面META内容更是丰富,从下面的一些例子我们就可见一斑:
1、基本信息
<META http-equiv=content-type content="text/html; charset=iso-8859-1">
<META http-equiv=Pragma content=no-cache>
<META content=webmaster@www.ibm.com name=Owner>
<META content="Copyright (c) 2001 by IBM Corporation" name=Copyright>
<META content=us name=IBM.Country>
<META content=index,follow name=Robots>
<META content=public name=Security>
<META content=Franklin/IPC name=Source>
<META http-equiv=PICS-Label
content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1)
"http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0)
"http://www.classify.org/safesurf/" l gen true r (SS~~000 1))'>
3、描述与关键词
<META
content="The IBM corporate home page, entry point to information about IBM products and services"
name=Description>
<META
content="The IBM corporate home page, entry point to information about IBM products and services"
name=Abstract>
<META
content="ibm,international business machines,internet,e-business,ebusiness,personal