Possible Values
name Document is loaded into the window or frame with the specified name (IE4+ only).
_blank Document is loaded in a new window.
_media Document is loaded in the HTML content area of the Media Bar (IE6 only).
_parent Document is loaded in the parent window.
_search Document is loaded in the browser search pane (IE5+ only).
_self Document is loaded in the same window.
_top Document is loaded in the topmost window for the site.