Might be worth giving this App a try given that the developers have made accessibility functionality a feature. http://uk.prweb.com/releases/2013/11/prweb11362531.htm
********** Dane Trethowan Skype: grtdane12 Phone US (213) 438-9741 Phone U.K. 01245 79 0598 Phone Australia (03) 9005 8589 Mobile: +61400494862 Fax +61397437954