DHTML Widgets 4

If your Website consists of frames, then the frame-set should be

loaded first, else the site may lose some formatting and contents. This script became

necessary for me when for one of my sites, Yahoo! listed the wrong file as the opening

page (welcome.html), leaving my visitors without any navigational aid. Thus, I needed a

script that would automatically redirect this page (and every other page for that

matter) in such a way that it would open in the proper frame. That is redirect them to the

HTML file containing the frame-set (index.html for my site). size="2">

First you need code

to test if welcome.html has opened in a frame or not. If not, it’s to be redirected

to index.html. This can be easily done by placing the following code in the header of the

file welcome.html.

face="Arial" COLOR="#000000" size="2">This code checks if self.location is same as

parent.location, then load index.html, passing the name of the file (welcome.html in this

case) as a parameter.

Index.html contains the code where all the wizardry takes place. If you

want to force your visitors to the first page, then index.html need not be anything

special–just your usual frame-set HTML. In fact, you need not even pass the calling

file name as parameter, but if you want the calling file (welcome.html) to open in one of

the frames then you’ll have to script your frame-set, as shown below rather than hard

code it.

Your index.html

should contain just the above code. Note that all the statements in front of each

document.write should be in a single line. The first two document.writes are

straightforward. The third contains a conditional statement which provides the correct

file name.

" ‘,

(location.search?location.search. substring(1):"home"), ‘.html"



(Pay attention to the " ‘ and , as you type.)

It says that if

location.search is not a null statement, then use location.search.substring(1)–this

will be the name of the calling file (welcome) if index.html has been called from

welcome.html. But if location.search is null, then use home, that is, index.html is opened

directly. Both location.search.substring(1) and home are prefixed to the extension HTML,

resulting in the correct name of the file to be opened in the frame named

"main".