<META http-equiv window-target>

Description:

Specifies the named window of the current page. In some browsers this will stop the page from appearing within frame.

Attributes:

<meta http-equiv="Window-Target" content="target">
Specifies the named window of the current page.  May be any valid target.

Examples:

<META HTTP-EQUIV="Window-target" CONTENT="_top">

Indicates the page is to begin at the top of the window.