Java Script: http://www.w3schools.com/js/js_form_validation.asp
CSS Layers: http://css-discuss.incutio.com/wiki/Overlapping_And_ZIndex
This article on A List Apart has many good ideas for formatting a web page for printing, including how to print hyperlinks parenthetically.
Modified the paralegal internet research page, to display answers to the lab problems after a code is given in a form. Used a php header statement to redirect to the print page if the correct code was given.
I freaked out a little. After doing a lot of work to get this page to work correctly, I tried to print the hand out. The print-out looked nothing like what displayed on screen. The answers were not indented, the font color was missing, the automatic numbers were gone.
Turns out, it was a problem with my stylesheet reference. I had been using
<link rel=”stylesheet” type=”text/css” href=”http://www.glenpritchard.com/css/global-styles.css” media=”screen”>
The problem was ‘media=”screen”‘. I did not know that you can specify different style sheets for printing and on-screen viewing. Specifying ‘media=”screen”‘ means that the style sheet will be used for what is displayed on the screen and not what prints. Using ‘media=”print”‘ will work for printing, but not anything else. To use the same style sheet for all purposes, ‘media=”all”‘ may be used.
W3C has a nice reference about style sheets. It also has a reference about media types.
Update: Because the style sheets are cascading, there was no need to redirect the research page to a separate print template. The same page can be used for screen and print! For future reference, the redirect code, which must go at the top before the <html> tag, looks like this:
<?php
if($_GET[“code”]==”reject4053″) {
header(“Location:http://www.glenpritchard.com/paralegal/print.php”);
}
?>
I was having a hard time centering an image on a page with the ‘margin:auto’ declaration. I learned that you must add the ‘display:block’ declaration.
Here is a great tutorial about producing printer-friendly versions of web pages.
Leaned that ajax is a way to write new content to web screen without re-writing the whole screen using php and java script.