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Web accessibility

Introduction

TGA are committed to providing a website that is accessible to the widest possible audience, including those with sight, audio and motor impairment restrictions.

Visual options

Users browsing on a PC with Internet Explorer 8 and 7, Firefox 3, Google Chrome, Safari 4 and Opera 9 will find that they can scale/zoom the entire page, including images, by holding down Ctrl and toggling the +/- keys. Mac users need to use the Apple Cmd key in conjunction with +/-. This applies to Safari 4, Firefox 3, Opera 9 and Camino.

Users still using older browsers versions will find that they can resize the text only using the same key combinations.

Scale/zoom and text resize options can also be accessed via each browser's context menu. See below for visual references and an explanation.

Examples of how to toggle page scale/text size browser by browser

Scale/zoom options on IE8 can be found under View > Zoom

Text resize options on IE8 can be found under View > Text Size

The scale/zoom option for Firefox can be found under View > Zoom. From here you can select to zoom or simply resize text.

Google Chrome's context menu is on the right hand side of the page represented by an icon. Control the current page > Zoom

The scale/zoom option on Opera 9 can be found under View > Zoom

Mac users can find the scale/zoom and text resize only option on Safari 4 under View.

High contrast

We now offer a high contrast, text only version of the website for users who wish to view a graphically low, content only version of the site. High Contrast heightens the diversity between the text and background colour of this site, making it more distinct. This reduces eyestrain and increases readability for many people. Use the Toggle high contrast button at the top right hand side of the site header to activate this feature.

Standards and validation

All pages within this website should successfully validate as XHTML 1.0 Strict documents according to the guidelines laid down by the W3C. Occasionally errors do slip into the XHTML mark-up, either via human error or input mistakenly into the content management system. If you find a page which does not validate, please contact us, let us know which page the error is on and we will endeavour to fix it as soon as possible.

The CSS used to manipulate the appearance of this site should also validate according to CSS level 2.1 guidelines.

This site is working towards conformance to Double-A of the W3C Web Content Accessibility Guidelines version 1.0 (WVAG 1.0), including all Priority 1 and Priority 2 and some Priority 3 checkpoints as defined in the Guidelines.

Structure

The site has been developed using headings, paragraphs, lists and other HTML (HyperText Markup Language) to create a logical document structure.

Alternative to scripts or other controls which rely on client device capability have been provided.

Context

Where possible, all hyperlinks use descriptive and meaningful text as a call to action. Short-hand language, such as click here has been avoided. Additionally, meaningful alt attributes and/or titles have also been added to all images where appropriate.

A written style that is straightforward and understandable has been employed throughout the site.

Navigation

A standard layout and navigation structure is maintained throughout the site. Screen reader users can skip the main navigation and return to the head of the page using the links supplied.

Layout

Text is laid out using W3C standards validated style sheets. Users can change the style sheets in their browsers to make viewing easier for their individual requirements. The document standard used is XHTML 1.0 Strict.

Screen settings

In accordance with current browser display statistics, this website has been designed for a screen resolution of 1024 x 768. The resolution is the number of pixels or dots in an image.

If you are viewing this website on a lower resolution screen such as 800 x 600 pixels, the text and images will look larger, and horizontal scroll bars will appear.

Browser compatibility

This website has been designed to be compatible with the following browser types and versions:

Internet Explorer 6

Although this site will display content for users still using Internet Explorer 6 or lower, it does not fully represent the layout of the site as the developers intended. To receive the best possible browsing experience, users of IE6 are strongly advised to update to a newer version of the software, or use one of the many free alternatives available.

Mobile technology

This website has been tested for use on mobile devices.

Site map

A site map has been provided that can help you navigate around the site. A link to this is available on every page of this website.