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276 lines
14 KiB
Plaintext
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--><title>mod_imap- Apache HTTP Server</title><link href="../style/manual.css" type="text/css" rel="stylesheet"/></head><body><blockquote><div align="center"><img src="../images/sub.gif" alt="[APACHE DOCUMENTATION]"/><h3>Apache HTTP Server Version 2.0</h3></div><h1 align="center">Apache Module mod_imap</h1><table cellspacing="1" cellpadding="0" bgcolor="#cccccc"><tr><td><table bgcolor="#ffffff"><tr><td nowrap="nowrap" valign="top"><span class="help">Description:</span></td><td>Server-side imagemap processing</td></tr><tr><td nowrap="nowrap"><a href="module-dict.html#Status" class="help">Status:</a></td><td>Base</td></tr><tr><td nowrap="nowrap"><a href="module-dict.html#ModuleIdentifier" class="help">Module Identifier:</a></td><td>imap_module</td></tr></table></td></tr></table><h2>Summary</h2>
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<p>This module processes <code>.map</code> files, thereby
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replacing the functionality of the <code>imagemap</code> CGI
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program. Any directory or document type configured to use the
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handler <code>imap-file</code> (using either
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<a href="mod_mime.html#addhandler" class="directive"><code class="directive">AddHandler</code></a> or
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<a href="core.html#sethandler" class="directive"><code class="directive">SetHandler</code></a>)
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will be processed by this module.</p>
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<p>The following directive will activate files ending with
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<code>.map</code> as imagemap files:</p>
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<blockquote><table cellpadding="10"><tr><td bgcolor="#eeeeee"><code>AddHandler imap-file map</code></td></tr></table></blockquote>
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<p>Note that the following is still supported:</p>
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<blockquote><table cellpadding="10"><tr><td bgcolor="#eeeeee"><code>AddType application/x-httpd-imap map</code></td></tr></table></blockquote>
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<p>However, we are trying to phase out "magic MIME types" so we
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are deprecating this method.</p>
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<h2>Directives</h2><ul><li><a href="#imapbase">ImapBase</a></li><li><a href="#imapdefault">ImapDefault</a></li><li><a href="#imapmenu">ImapMenu</a></li></ul><h2>New Features</h2>
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<p>The imagemap module adds some new features that were not
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possible with previously distributed imagemap programs.</p>
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<ul>
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<li>URL references relative to the Referer: information.</li>
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<li>Default <BASE> assignment through a new map
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directive <code>base</code>.</li>
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<li>No need for <code>imagemap.conf</code> file.</li>
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<li>Point references.</li>
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<li>Configurable generation of imagemap menus.</li>
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</ul>
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<h2>Imagemap File</h2>
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<p>The lines in the imagemap files can have one of several
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formats:</p>
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<blockquote><table cellpadding="10"><tr><td bgcolor="#eeeeee"><code>
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directive value [x,y ...]<br>
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directive value "Menu text" [x,y ...]<br>
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directive value x,y ... "Menu text"
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</code></td></tr></table></blockquote>
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<p>The directive is one of <code>base</code>,
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<code>default</code>, <code>poly</code>, <code>circle</code>,
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<code>rect</code>, or <code>point</code>. The value is an
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absolute or relative URL, or one of the special values listed
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below. The coordinates are <code>x,y</code> pairs separated by
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whitespace. The quoted text is used as the text of the link if
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a imagemap menu is generated. Lines beginning with '#' are
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comments.</p>
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<h3>Imagemap File Directives</h3>
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<p>There are six directives allowed in the imagemap file. The
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directives can come in any order, but are processed in the
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order they are found in the imagemap file.</p>
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<dl>
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<dt><code>base</code> Directive</dt>
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<dd>Has the effect of <code><BASE HREF="value"></code>.
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The non-absolute URLs of the map-file are taken relative to
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this value. The <code>base</code> directive overrides
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ImapBase as set in a .htaccess file or in the server
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configuration files. In the absence of an ImapBase
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configuration directive, <code>base</code> defaults to
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<code>http://server_name/</code>.<br>
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<code>base_uri</code> is synonymous with <code>base</code>.
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Note that a trailing slash on the URL is significant.</dd>
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<dt><code>default</code> Directive</dt>
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<dd>The action taken if the coordinates given do not fit any
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of the <code>poly</code>, <code>circle</code> or
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<code>rect</code> directives, and there are no
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<code>point</code> directives. Defaults to
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<code>nocontent</code> in the absence of an ImapDefault
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configuration setting, causing a status code of <code>204 No
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Content</code> to be returned. The client should keep the
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same page displayed.</dd>
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<dt><code>poly</code> Directive</dt>
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<dd>Takes three to one-hundred points, and is obeyed if the
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user selected coordinates fall within the polygon defined by
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these points.</dd>
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<dt><code>circle</code></dt>
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<dd>Takes the center coordinates of a circle and a point on
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the circle. Is obeyed if the user selected point is with the
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circle.</dd>
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<dt><code>rect</code> Directive</dt>
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<dd>Takes the coordinates of two opposing corners of a
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rectangle. Obeyed if the point selected is within this
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rectangle.</dd>
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<dt><code>point</code> Directive</dt>
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<dd>Takes a single point. The point directive closest to the
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user selected point is obeyed if no other directives are
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satisfied. Note that <code>default</code> will not be
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followed if a <code>point</code> directive is present and
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valid coordinates are given.</dd>
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</dl>
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<h3>Values</h3>
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<p>The values for each of the directives can any of the following:</p>
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<dl>
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<dt>a URL</dt>
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<dd>The URL can be relative or absolute URL. Relative URLs
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can contain '..' syntax and will be resolved relative to the
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<code>base</code> value.<br>
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<code>base</code> itself will not resolved according to the
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current value. A statement <code>base mailto:</code> will
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work properly, though.</dd>
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<dt><code>map</code></dt>
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<dd>Equivalent to the URL of the imagemap file itself. No
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coordinates are sent with this, so a menu will be generated
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unless ImapMenu is set to 'none'.</dd>
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<dt><code>menu</code></dt>
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<dd>Synonymous with <code>map</code>.</dd>
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<dt><code>referer</code></dt>
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<dd>Equivalent to the URL of the referring document. Defaults
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to <code>http://servername/</code> if no Referer: header was
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present.</dd>
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<dt><code>nocontent</code></dt>
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<dd>Sends a status code of <code>204 No Content</code>,
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telling the client to keep the same page displayed. Valid for
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all but <code>base</code>.</dd>
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<dt><code>error</code></dt>
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<dd>Fails with a <code>500 Server Error</code>. Valid for all
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but <code>base</code>, but sort of silly for anything but
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<code>default</code>.</dd>
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</dl>
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<h3>Coordinates</h3>
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<dl>
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<dt><code>0,0 200,200</code></dt>
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<dd>A coordinate consists of an <code>x</code> and a <code>y</code>
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value separated by a comma. The coordinates are separated
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from each other by whitespace. To accommodate the way Lynx
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handles imagemaps, should a user select the coordinate
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<code>0,0</code>, it is as if no coordinate had been
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selected.</dd>
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</dl>
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<h3>Quoted Text</h3>
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<dl>
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<dt><code>"Menu Text"</code></dt>
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<dd>After the value or after the coordinates, the line
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optionally may contain text within double quotes. This string
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is used as the text for the link if a menu is
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generated:<br>
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<code><a HREF="http://foo.com/">Menu
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text</a></code><br>
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If no quoted text is present, the name of the link will be
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used as the text:<br>
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<code><a
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HREF="http://foo.com/">http://foo.com</a></code><br>
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It is impossible to escape double quotes within this
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text.</dd>
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</dl>
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<h2>Example Mapfile</h2>
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<blockquote><table cellpadding="10"><tr><td bgcolor="#eeeeee"><code>
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#Comments are printed in a 'formatted' or
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'semiformatted' menu.<br>
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#And can contain html tags. <hr><br>
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base referer<br>
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poly map "Could I have a menu, please?" 0,0 0,10 10,10
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10,0<br>
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rect .. 0,0 77,27 "the directory of the referer"<br>
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circle http://www.inetnebr.com/lincoln/feedback/ 195,0
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305,27<br>
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rect another_file "in same directory as referer" 306,0
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419,27<br>
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point http://www.zyzzyva.com/ 100,100<br>
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point http://www.tripod.com/ 200,200<br>
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rect mailto:nate@tripod.com 100,150 200,0 "Bugs?"<br>
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</code></td></tr></table></blockquote>
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<h2>Referencing your mapfile</h2>
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<blockquote><table cellpadding="10"><tr><td bgcolor="#eeeeee"><code>
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<A HREF="/maps/imagemap1.map"><br>
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<IMG ISMAP SRC="/images/imagemap1.gif"><br>
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</A>
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</code></td></tr></table></blockquote>
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<hr/><h2><a name="ImapBase">ImapBase</a> <a name="imapbase">Directive</a></h2><table cellpadding="1" cellspacing="0" border="0" bgcolor="#cccccc"><tr><td><table bgcolor="#ffffff"><tr><td nowrap="nowrap"><strong>Description: </strong></td><td>Default base for imagemap files</td></tr><tr><td nowrap="nowrap"><a href="directive-dict.html#Syntax" class="help">Syntax:</a></td><td>ImapBase map|referer|<em>URL</em></td></tr><tr><td nowrap="nowrap"><a href="directive-dict.html#Default" class="help">Default:</a></td><td><code>ImapBase http://servername/</code></td></tr><tr><td nowrap="nowrap"><a href="directive-dict.html#Context" class="help">Context:</a></td><td>server config, virtual host, directory, .htaccess</td></tr><tr><td nowrap="nowrap"><a href="directive-dict.html#Override" class="help">Override:</a></td><td>Indexes</td></tr><tr><td nowrap="nowrap"><a href="directive-dict.html#Status" class="help">Status:</a></td><td>Base</td></tr><tr><td nowrap="nowrap"><a href="directive-dict.html#Module" class="help">Module:</a></td><td>mod_imap</td></tr></table></td></tr></table>
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<p>The <code class="directive">ImapBase</code> directive sets the default
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<code>base</code> used in the imagemap files. Its value is
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overridden by a <code>base</code> directive within the imagemap
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file. If not present, the <code>base</code> defaults to
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<code>http://servername/</code>.</p>
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<hr/><h2><a name="ImapDefault">ImapDefault</a> <a name="imapdefault">Directive</a></h2><table cellpadding="1" cellspacing="0" border="0" bgcolor="#cccccc"><tr><td><table bgcolor="#ffffff"><tr><td nowrap="nowrap"><strong>Description: </strong></td><td>Default action when an imagemap is called with coordinates
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that are not explicitly mapped</td></tr><tr><td nowrap="nowrap"><a href="directive-dict.html#Syntax" class="help">Syntax:</a></td><td>ImapDefault error|nocontent|map|referer|<em>URL</em></td></tr><tr><td nowrap="nowrap"><a href="directive-dict.html#Default" class="help">Default:</a></td><td><code>ImapDefault nocontent</code></td></tr><tr><td nowrap="nowrap"><a href="directive-dict.html#Context" class="help">Context:</a></td><td>server config, virtual host, directory, .htaccess</td></tr><tr><td nowrap="nowrap"><a href="directive-dict.html#Override" class="help">Override:</a></td><td>Indexes</td></tr><tr><td nowrap="nowrap"><a href="directive-dict.html#Status" class="help">Status:</a></td><td>Base</td></tr><tr><td nowrap="nowrap"><a href="directive-dict.html#Module" class="help">Module:</a></td><td>mod_imap</td></tr></table></td></tr></table>
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<p>The <code class="directive">ImapDefault</code> directive sets the default
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<code>default</code> used in the imagemap files. Its value is
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overridden by a <code>default</code> directive within the
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imagemap file. If not present, the <code>default</code> action
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is <code>nocontent</code>, which means that a <code>204 No
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Content</code> is sent to the client. In this case, the client
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should continue to display the original page.</p>
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<hr/><h2><a name="ImapMenu">ImapMenu</a> <a name="imapmenu">Directive</a></h2><table cellpadding="1" cellspacing="0" border="0" bgcolor="#cccccc"><tr><td><table bgcolor="#ffffff"><tr><td nowrap="nowrap"><strong>Description: </strong></td><td>Action if no coordinates are given when calling
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an imagemap</td></tr><tr><td nowrap="nowrap"><a href="directive-dict.html#Syntax" class="help">Syntax:</a></td><td>ImapMenu
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none|formatted|semiformatted|unformatted</td></tr><tr><td nowrap="nowrap"><a href="directive-dict.html#Context" class="help">Context:</a></td><td>server config, virtual host, directory, .htaccess</td></tr><tr><td nowrap="nowrap"><a href="directive-dict.html#Override" class="help">Override:</a></td><td>Indexes</td></tr><tr><td nowrap="nowrap"><a href="directive-dict.html#Status" class="help">Status:</a></td><td>Base</td></tr><tr><td nowrap="nowrap"><a href="directive-dict.html#Module" class="help">Module:</a></td><td>mod_imap</td></tr></table></td></tr></table>
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<p>The <code class="directive">ImapMenu</code> directive determines the
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action taken if an imagemap file is called without valid
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coordinates.</p>
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<dl>
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<dt><code>none</code></dt>
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<dd>If ImapMenu is <code>none</code>, no menu is generated,
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and the <code>default</code> action is performed.</dd>
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<dt><code>formatted</code></dt>
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<dd>A <code>formatted</code> menu is the simplest menu.
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Comments in the imagemap file are ignored. A level one header
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is printed, then an hrule, then the links each on a separate
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line. The menu has a consistent, plain look close to that of
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a directory listing.</dd>
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<dt><code>semiformatted</code></dt>
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<dd>In the <code>semiformatted</code> menu, comments are
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printed where they occur in the imagemap file. Blank lines
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are turned into HTML breaks. No header or hrule is printed,
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but otherwise the menu is the same as a
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<code>formatted</code> menu.</dd>
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<dt><code>unformatted</code></dt>
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<dd>Comments are printed, blank lines are ignored. Nothing is
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printed that does not appear in the imagemap file. All breaks
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and headers must be included as comments in the imagemap
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file. This gives you the most flexibility over the appearance
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of your menus, but requires you to treat your map files as
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HTML instead of plaintext.</dd>
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</dl>
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<hr/></blockquote><h3 align="center">Apache HTTP Server Version 2.0</h3><a href="./"><img src="../images/index.gif" alt="Index"/></a><a href="../"><img src="../images/home.gif" alt="Home"/></a></body></html> |