DHTML Lab: HierMenus CENTRAL: Version 3 Frameset Instructions, Step 6 - dhtmlab.com
Frameset Menus -
Step 6 of 6
Revised: June 26, 2001
For every menu tree that you have defined, you should create a link in your navigation page. These links should conform to this backward-compatible syntax:
<BODY> . . other HTML . <A HREF="/" onMouseOver="popUp('elMenu1',event)" onMouseOut="popDown('elMenu1')">Webreference</A> <A HREF="/index2.html" onMouseOver="popUp('elMenu2',event)" onMouseOut="popDown('elMenu2')">Contents</A> . . other HTML . </BODY>
|Link Syntax Details|
|HREF||Make sure that a valid URL is included as the value of the HREF attribute. All browsers that do not support menus will not display the menu trees, and associated links, and need this link to navigate.|
|The event handlers must be onMouseOver and onMouseOut even if you have set the clickStart and clickKill parameter variables to true (displaying and/or hiding menus with mouse click. see step 3.) The menu script will adapt to the parameters you have set.|
|popUp('elMenu1',event)||popUp() takes two arguments:|
|popDown('elMenu1')||popDown() takes only one argument, but it must be the same menu identifier as the popUp() first argument. That is, if popUp() has "elMenu2_3_2" as its first argument, |
|link display text||The link's display text should, of course, describe the menu tree, but should also make sense to users who will not see the menus. For example, the link text should never read: "Menu 2" or "Mouseover to see Menu." Since an old browser user will click on it to navigate, they must be informed of where they are going.|
Once you have included all your in-page links, the menu navigation system for your site is complete! Painless, wasn't it?
VERY IMPORTANT FINAL NOTE:
Remember, the menus are NOT some magic floating elements that appear over the pages in your main frame. They are positioned HTML elements that are built in the main frame page. That is, they alter the content of the main page by adding to it. For security reasons, authors cannot modify pages that do not belong to them. That is, they cannot modify pages that do not reside on the same server or in the same domain. See our discussion in Column 21.
You cannot, therefore, expect the menus to appear over, say, cnn.com, if you load it into your main page. Only your own pages will display the menus. Outside of the security issue, this should be your preferred behavior. After all, the menus help users navigate your site, and should appear when they are viewing your site only.
Produced by Peter Belesis and
All Rights Reserved. Legal Notices.
Created: July 20, 1999
Revised: June 26, 2001