兄弟们啊，，等得急啊，，今天就要交啦!!!!!!

[shiufurong007]

看看这句是什么意思咯!!
function fix4NS(instr){
var re = /STYLE=\"WIDTH\s*:\s*(\d+)px;\s*HEIGHT:\s*(\d+)px;*\s*\"/gi;
var re1 = /<A\s+href=".*?"\s*>\s*<\/A>/gi; // for taking out blank links
/* changes width and height from style definitions
to plain HTML that NS can understand.
A troublesome output -
<IMG style="WIDTH: 10px; HEIGHT: 10px" width=20 height=30>
will be changed to
<IMG width=10 height=10 width=20 height=30>
DHTML editor takes care of the extra tags.. phew!
S Babu - 11/23/2000
*/
instr=instr.replace(re1, "");
return(instr.replace(re, "width=$1 height=$2"));
}

[无爱大叔]

正则
匹配大小写不敏感的形如：
style="width :33px;height :44px; "
<a href="a.asp " > </a>
的语法。

[无爱大叔]

\s 空格字符
* 匹配前面的项目0或多次
//gi 全局匹配大小写不敏感
\d 任何数字
$1,$2访问子字符串从左到右进行编号从$1开始到$9。