Problems Using Firefox To Display OMhelp Output

Problems Using Firefox To Display OMhelp Output
Format
XHTML + MATHML version of this web page .

HTML version of this web page .

Purpose
The Firefox browser can display both XHTML and MathML commands. Below is a list of cases where Firefox appears to have problems displaying MathML commands. If you have any feed back, please send e-mail to: bradbell@seanet.com .

mathvariant
The mathvariant='script' option does not work properly in Firefox. To see this select the following link to a www.w3.org test case: mimathvariant14.xml This bug has the effect of displaying the Latex \cal font the same as its default font.

Copy and Paste
The link firefox_copy_paste.xml is to the XHTML commands below. If you select that link, then copy all the text, then paste it anywhere (e.g., notepad in Windows), there will be extra white-space in the pasted text (as compared to the text display in the Firefox browser). For example, there is a blank line between "First line." and "Second line." in the copied text:

<?xml version='1.0'?>
<?xml-stylesheet type='text/xsl'?>
<html xmlns='http://www.w3.org/1999/xhtml'>
        <head></head>
        <body>
                First line.<br/>
                Second line.
        </body>
</html>

Javascript
The file FirefoxJavascript.htm contains the HTML commands below. Note that the word Test will appear in the text area.

<html>
	<head></head>
	<body>
		The word "Test" should appears in the text area below:
		<br/>
		<form name="search">
			<textarea name="list" rows="1" cols="20" ></textarea>
		</form>
		<script type='text/javascript'>
			document.search.list.value    = "Test";
		</script>
	</body>
</html>

The file FirefoxJavascript.xml which contains the XML commands below. Note that the word Test should, but does not, appear in the text area.

<?xml version='1.0'?>
<?xml-stylesheet type='text/xsl' href='pmathml.xsl'?>
<html xmlns='http://www.w3.org/1999/xhtml'>
	<head></head>
	<body>
		The word "Test" should appear in the text area below:
		<br/>
		<form name="search">
			<textarea name="list" rows="1" cols="20" ></textarea>
		</form>
		<script type='text/javascript'>
			document.search.list.value    = "Test";
		</script>
	</body>
</html>

Background Color
The file FirefoxBackground.htm contains the HTML commands below.

<html>
	<head></head>
	<body style ='background-color : rgb(210, 210, 210)'>
		The background color around this text is a light shade of gray.
		Note that this color applies to the entire frame.
	</body>
</html>

The file FirefoxBackground.xml contains the XML commands below.

<?xml version='1.0'?>
<?xml-stylesheet type='text/xsl' href='pmathml.xsl'?>
<html xmlns='http://www.w3.org/1999/xhtml'>
	<head></head>
	<body style ='background-color : rgb(210, 210, 210)'>
		The background color around this text is a light shade of gray.
		Note that this color only applies to the text.
	</body>
</html>

Negative Space
A positive space display is demonstrated by the following input

	<mi>=</mi><mspace width="1em"/><mi>/</mi>

which generates the output

= /

The negative spaces do not display as expected as demonstrated by the following input

	<mi>=</mi><mspace width="-1em"/><mi>/</mi>

which generates the output

= /

A formal bug report for this is given in the section Mozilla Bug Report For Negative Width in Mspace Command
Operator Sizes
In section 3.2.5.9 of http://www.w3.org/TR/MathML2/chapter3.html#presm.mo it states "The largeop attribute specifies whether the operator should be drawn larger than normal if displaystyle="true" in the current rendering environment. This does not work properly for the &coprod; (code ∐) or &bigvee; (code ⋁) or &bigwedge; (code ⋀) symbols. For example

	<mo displaystyle="false" largeop="true">&#x022C1;</mo> 
	<mo displaystyle="true" largeop="true">&#x022C1;</mo>

generates the output

⋁ ⋁

UnderBar
The UnderBar (x00332) does not display at all in the context below. Note that the underbar should stretch to fit what it is under. The input

	<munder>
		<mrow> <mi>a</mi><mo>+</mo><mi>b</mi> </mrow>
		<mo> &#x00332; </mo>
	</munder>

results in the following output

\underset{̲}{a + b}

Symbols
The following symbols do not seem to be displayed correctly:

Latex	MathML	W3 File	W3 Image	Firefox
\triangleleft	`<mo>⊲</mo>`	022.html		$⊲$
\triangleright	`<mo>⊳</mo>`	022.html		$⊳$
\preceq	`<mo>⪯</mo>`	02A.html		$⪯$
\succeq	`<mo>⪰</mo>`	02A.html		$⪰$
\longleftarrow	`<mo>⟵</mo>`	027.html		$⟵$
\Longleftarrow	`<mo>⟸</mo>`	027.html		$⟸$
\longrightarrow	`<mo>⟶</mo>`	027.html		$⟶$
\Longrightarrow	`<mo>⟹</mo>`	027.html		$⟹$
\longleftrightarrow	`<mo>⟷</mo>`	027.html		$⟷$
\Longleftrightarrow	`<mo>⟺</mo>`	027.html		$⟺$
\longmapsto	`<mo>⟼</mo>`	027.html		$⟼$
\bigodot	`<mo>⨀</mo>`	02A.html		$⨀$
\bigotimes	`<mo>⨂</mo>`	02A.html		$⨂$
\bigoplus	`<mo>⨁</mo>`	02A.html		$⨁$
\biguplus	`<mo>⨄</mo>`	02A.html		$⨄$

Input File: firefox.omh