Web Page Redirection

<head>
<meta http-equiv="Refresh" content="5; URL=reform.html" />
The above code causes the browser to load the page "reform.html" 5 seconds after loading the page that contained the code. If the URL=page.html is omitted then the browser reloads the page containing the code every 5 seconds.
The above code also works with pages in framesets or iframes.
Pay special attention to the value of the attribute content . Examples:
content="5"> - reloads the page every 5 seconds
content="5; URL=reform.html"- loads the page reform.html after 5 seconds
In the second example the value of content is the number of seconds, a semi-colon, followed by URL=reform.html".

post vs get

Get requests have a limit of 2048 characters for Internet Explorer. The get request consists of the URL of the application and the form data.
When security of the data is important (eg. passwords) post is more secure. The data sent by get is visible in the URL and therefore can be viewed in the browser history or in bookmarks.
Since transmission is a single-step process in get, it is faster than post.
Get results can be bookmarked and get applications can be invoked from links (the <a> tag).

URL Encodings

URLs use the following encoding for characters that are not numbers or letters:

Character	Description	Usage	Encoding
	space		%20
;	semicolon	reserved	%3b
/	slash	reserved	%2f
?	question mark	reserved	%3f
:	colon	reserved	%3a
@	at sign	reserved	%40
=	equals sign	reserved	%3d
&	ampersand	reserved	%26
<	Less-than sign	unsafe	%3c
>	Greater-than sign	unsafe	%3e
“	double quote	unsafe	%22
#	hash symbol	unsafe	%23
%	percent	unsafe	%25
{	left curly brace	unsafe	%7b
}	right curly brace	unsafe	%7d
|	vertical bar	unsafe	%7c
\	backslash	unsafe	%5c
^	caret	unsafe	%5e
~	tilde	unsafe	%7e
[	left square bracket	unsafe	%5b
]	right square bracket	unsafe	%5d
'	single quote	unsafe	%60