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This week, we're updating our course layouts and descriptions. Presentation and materials always gently change over time, but just occasionally there's a need to make a step change to clear out some of the old and roll in the new. That's now happening - but over a long and complex site it's not instant and you'll see sections of the site changing up to and including 19th September.

See also [here] for status update
 
Colour for access

Under disability discrimination legistlation, anyone who offers a service is required to make all reasonable efforts to provide an equality of service to anyone who suffers any form of disability; we've all seen wheelchair ramps and wide doors spring up on the High Street of late.

Every disabled person has slightly different requirements, so there's no quick aand easy answer to the question "how can I make my website more accessible / conform to the law". The concensus view is that two elements need to be considered: (a) font / size and (b) colour. With font and size, an option to provide a single large font page (even though very few words may be seen at once) is generally considered to fit the bill; for colour, I've seen examples that let web sites switch between black on white, yellow on dark blue, white on black and dark blue on yellow.

But the consensus view isn't ideal for everyone - indeed, there are as many different ideals as there are people. I've learnt today of research by the University of Bangor (that I need to follow up up) that shows that the ideal colours for someone who's dyslexic are black on light blue, or black on light green. Either light blue or light green on black is also very good. For some reason that's not yet understood, yellow on black and black on yellow is pretty dreadful ... as are black and red, and red and black. The frequently-seen blue on yellow and yellow on blue are great for some people, and horrendous for others. "There's a doctorate in researching that for someone" says one of my trainees on today's course, who was one of the subjects in the original Bangor study and continues to take an interest in their work.
(written 2004-12-06, updated 2006-06-05)

 
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
A213 - Web Application Deployment - Commercial and Legal Aspects
  [4283] Can a legitimate forum post become illegal a year later? - (2014-07-11)
  [4234] Change to Libel and Defamation laws from 1st January 2014 - (2013-12-31)
  [3747] An easy way to comply with the new cookie law if your site is well designed - (2012-06-02)
  [3746] Google Analytics and the new UK Cookie law - (2012-06-02)
  [3745] Legal change - You need to obtain user consent if you use cookies on your website - (2012-06-01)
  [3168] Web Sites - Subject to Advertising Standards from 1st March - check your sites - (2011-02-13)
  [3104] Catering in Syracuse, the Saigon Cafe, stolen images and Christmas - (2010-12-25)
  [3016] The legal considerations of your web presence - revisited - (2010-10-26)
  [2686] Freedom of Information - consideration for web site designers - (2010-03-20)
  [2592] Re-using our pictures - (2010-01-21)
  [2252] Leaping dog, Leaping horse, copyright of old masters - (2009-06-20)
  [2140] Beware - giving copyright away when you upload a picture - Dogs Trust - (2009-04-25)
  [1937] Getting hold of the wrong end of the stick - (2008-12-12)
  [1840] Validating Credit Card Numbers - (2008-10-14)
  [1747] Who is watching you? - (2008-08-10)
  [1506] Ongoing Image Copyright Issues, PHP and MySQL solutions - (2008-01-14)
  [1486] Does anyone understand Lithuanian? - (2007-12-27)
  [1485] Copyright and theft of images, bandwidth and members. - (2007-12-26)
  [1431] Getting the community on line - some basics - (2007-11-13)
  [1054] UK legal requirements for your commercial web site - (2007-01-27)
  [994] Training on Cascading Style Sheets - (2006-12-17)
  [876] Making pages clearer - easy Disability Discrimination Act Compliance - (2006-09-23)
  [795] Remember a site's non-technical issues too - (2006-07-07)
  [759] Watch your Google profile - (2006-06-13)
  [746] Domain Listing Center and Domain Registry of America - (2006-06-06)
  [532] Copyright - how much can I legally copy? - (2005-12-17)
  [322] More maps - (2005-05-23)
  [320] Ordnance Survey - using a 'Get a map' - (2005-05-22)
  [288] Colour blindness for web developers - (2005-04-22)
  [259] Responding to spam - (2005-03-27)

G902 - Well House Consultants - Web site techniques, utility and visibility
  [4239] Facebook marketing - early experiences - (2014-01-19)
  [4136] How do I post automatically from a PHP script to my Twitter account? - (2013-07-10)
  [4115] More or less back - what happened to our server the other day - (2013-06-14)
  [4076] Web site - fully back! - (2013-04-29)
  [4001] Helping search engines with appropriate 400 error codes - (2013-02-11)
  [3974] TV show appearance - how does it effect your web site? - (2013-01-13)
  [3896] An email marathon - (2012-10-15)
  [3776] Some traps it's so easy to fall into in designing your web site - (2012-06-23)
  [3744] Short Web Addresses for Melksham - (2012-05-30)
  [3734] QR codes with marketing logos embedded - (2012-05-16)
  [3623] Some TestWise examples - helping use Ruby code to check your web site operation - (2012-02-24)
  [3589] Promoting a single one of your domains on the search engines - (2012-01-22)
  [3563] How big is a web page these days? Does the size of your pages matter? - (2011-12-26)
  [3554] Learning more about our web site - and learning how to learn about yours - (2011-12-17)
  [3532] Sharing the user experience - designing a form with the customer in mind - (2011-11-29)
  [3491] Who is knocking at your web site door? Are you well set up to deal with allcomers? - (2011-10-21)
  [3426] Automed web site testing scripted in Ruby using watir-webdriver - (2011-09-09)
  [3367] Google +1 - what is it? - (2011-07-22)
  [3197] Finding and diverting image requests from rogue domains - (2011-03-08)
  [3149] Looking back at www.wellho.net - (2011-01-28)
  [3087] Making the most of critical emails - reading behind the scene - (2010-12-16)
  [3022] Retaining web site visitors - reducing the one page wonders - (2010-10-31)
  [2981] How to set up short and meaningfull alternative URLs - (2010-10-02)
  [2668] Is it worth it? - (2010-03-09)
  [2569] How to run a successful online poll / petition / survey / consultation - (2010-01-10)
  [2552] Web site traffic - real users, or just noise? - (2009-12-26)
  [2532] Analysing Google arrivals by country of origin - (2009-12-10)
  [2519] Status Page / breaks of service in early December - (2009-11-30)
  [2410] Removal of technical resources from this site - (2009-09-19)
  [2389] Writing with our customers words - (2009-09-01)
  [2341] Koulutus, Open Source tietokone kielillä - (2009-08-09)
  [2340] ldning, Open Source dator språk - (2009-08-09)
  [2339] Opplæring, Open Source datamaskinen språk - (2009-08-09)
  [2338] Uddannelse, Open Source computer sprog - (2009-08-09)
  [2337] Opleiding, Open Source computertalen - (2009-08-09)
  [2336] Formação, Open Source computador línguas - (2009-08-09)
  [2335] Ausbildung, die Open-Source-Sprachen - (2009-08-09)
  [2334] Formazione, Open Source computer lingue - (2009-08-09)
  [2333] Formación, de los lenguajes de código abierto - (2009-08-09)
  [2332] Formation, des langages Open Source - (2009-08-09)
  [2225] How important is a front page ranking on a search engine? - (2009-06-09)
  [2065] Static mirroring through HTTrack, wget and others - (2009-03-03)
  [2056] Web Site Loading - experiences and some solutions shared - (2009-02-26)
  [1982] Cooking bodies and URLs - (2009-01-08)
  [1970] Plagarism - who is copying my pages? - (2009-01-02)
  [1961] Making our things easier to find - (2008-12-26)
  [1955] How to avoid duplicating web page maintainance - (2008-12-20)
  [1888] Find the link - (2008-11-16)
  [1856] A few of my favourite things - (2008-10-26)
  [1833] Web Bloopers - good form design - avoiding pitfalls - (2008-10-11)
  [1797] I have been working hard but I do not expect you noticed - (2008-09-14)
  [1793] Which country does a search engine think you are located in? - (2008-09-11)
  [1756] Ever had One of THOSE mornings? - (2008-08-16)
  [1711] Rapid growth leads to server move - (2008-07-17)
  [1653] How do Google Ads work? - (2008-05-25)
  [1634] Kiss and Book - (2008-05-07)
  [1630] To provide external links, or not? - (2008-05-04)
  [1610] PHP course dot co, dot uk - (2008-04-13)
  [1554] Online hotel reservations - Melksham, Wiltshire (near Bath) - (2008-02-24)
  [1541] Colour, Composition or Content - (2008-02-16)
  [1534] Where in the world / country is my visitor from? - (2008-02-07)
  [1513] Perl, PHP or Python? No - Perl AND PHP AND Python! - (2008-01-20)
  [1505] Script to present commonly used images - PHP - (2008-01-13)
  [1494] A time to update pictures - (2008-01-03)
  [1437] Above the fold with First Great Western - (2007-11-19)
  [1297] Stuffing content into a web page - easy maintainance - (2007-08-09)
  [1237] What proportion of our web traffic is robots? - (2007-06-19)
  [1212] What brought YOU to our web site? - (2007-06-01)
  [1207] Simple but effective use of mod_rewrite (Apache httpd) - (2007-05-27)
  [1198] From Web to Web 2 - (2007-05-21)
  [1186] Two new pages / sites - (2007-05-14)
  [1184] Finding resources - some pointers - (2007-05-13)
  [1177] Sorting out for a site map - (2007-05-05)
  [1104] Drawing dynamic graphs in PHP - (2007-03-09)
  [1055] Above the fold - (2007-01-28)
  [1029] Our search engine placement is dropping. - (2007-01-11)
  [1015] Search engine placement - long term strategy and success - (2006-12-30)
  [976] Santa at the station - (2006-12-09)
  [916] Driving customers away - (2006-11-07)
  [893] Visibility - (2006-10-14)
  [800] Effective web campaign? - (2006-07-12)
  [767] Finding the language preference of a web site visitor - (2006-06-18)
  [757] Horse and Python training - (2006-06-12)
  [732] Where is a web site visitor browsing from - (2006-05-24)
  [718] Protecting images from theft - (2006-05-12)
  [681] Mirroring a dynamic site - (2006-04-12)
  [658] Keeping the visitors happy and browsing - (2006-03-26)
  [649] Denial of Service ''attack'' - (2006-03-17)
  [533] Bigger Box Campaign - (2005-12-18)
  [528] Getting favicon to work - avoiding common pitfalls - (2005-12-14)
  [510] Dynamic Web presence - next generation web site - (2005-11-29)
  [492] New Navigation Aid - Launch of My Wellho - (2005-11-11)
  [414] Form Madness - (2005-08-14)
  [376] What brings people to my web site? - (2005-07-13)
  [369] CMS - the minefield of Choices - (2005-07-05)
  [348] Graveyard pages - (2005-06-15)
  [347] Frightening and from-friend viruses and spams - (2005-06-14)
  [314] What language is this written in? - (2005-05-17)
  [311] Growth pains - (2005-05-14)
  [284] The Iconish language - (2005-04-19)
  [278] Cover all the options - (2005-04-13)
  [276] An apology to Mr Boneparte - (2005-04-11)
  [274] Our most popular resources - (2005-04-10)
  [268] Information request forms, cleaning up spam - (2005-04-05)
  [261] Putting a form online - (2005-03-29)
  [222] Who are all these visitors? - (2005-02-20)
  [202] Searching for numbers - (2005-02-04)
  [197] Allow for peak traffic on your web site - (2005-02-01)
  [182] Your personal Google ranking - (2005-01-19)
  [179] The hunt for unique words - (2005-01-16)
  [173] Data Mining - (2005-01-09)
  [165] Implementing an effective site search engine - (2005-01-01)
  [117] A case of case - (2004-11-14)
  [109] URLs - a service and not a hurdle - (2004-11-04)
  [98] No more 'Error 404' pages. Something better. - (2004-10-24)
  [32] Web design platoon - (2004-08-29)
  [23] Skills and responsibilities - (2004-08-22)


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Network Camera
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example of Tcl namespaces and packages
A comment on comments
Tcl sandwich - lists in Tcl
Network Camera
Colour for access
Too technical?
Comparison Chart for Perl programmers - list functions
Just provide a room and the students
Perl - redo and last without a loop
Certification schemes
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This is a page archived from The Horse's Mouth at http://www.wellho.net/horse/ - the diary and writings of Graham Ellis. Every attempt was made to provide current information at the time the page was written, but things do move forward in our business - new software releases, price changes, new techniques. Please check back via our main site for current courses, prices, versions, etc - any mention of a price in "The Horse's Mouth" cannot be taken as an offer to supply at that price.

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