from: http://msdn2.microsoft.com/en-us/library/ms533689.aspx

via: http://blog.joycode.com/tingwang/archive/2007/12/03/112203.aspx

Syntax

HTML
<META CONTENT = vContent… >

Scripting
[ vContent = ] META.content

Possible Values

vContent
String that specifies or receives one of the following values.

description
Meta-information.

refresh
Integer consisting of the number of seconds to elapse before the document is refreshed. This value requires the httpEquiv to be set with the refresh value.

url
Location that is loaded when the document is refreshed. This value requires the httpEquiv to be set with the refresh value.

mimetype
MIME type used for the charset value.

charset
Character set of the document. This value requires the mimetype value to be set with a valid MIME type, and the httpEquiv to be set with the refresh value.

noopen
Microsoft Internet Explorer 6 for Microsoft Windows XP Service Pack 2 (SP2) and later. Hides the Open or Run button on the File Download dialog box. This value requires the name attribute to be set with the DownloadOptions value.

nosave
Internet Explorer 6 for Windows XP SP2 and later. Hides the Save button on the File Download dialog box. This value requires the name attribute to be set with the DownloadOptions value.