// -*-c++-*- // Author : Philippe Le Hegaret // insert this function in your HTML document : // ... // // ... ... // ... var activeDispatcher = true; // active the event dispatcher function activeDispatcher() { activeDispatcher = true; } // don't ative the event dispatcher function desactiveDispatcher() { activeDispatcher = false; } // go to a page function gotoPage(newPage) { window.location = newPage; return true; } // get the keycode of a key event function getKeyCode(event) { var prefix = ''; if (event.shiftKey) { prefix = 's'; } if (event.ctrlKey) { prefix += 'c'; } if (event.altKey) { prefix += 'a'; } return prefix + event.keyCode; } // define a page object function Page(next, previous, size, toc) { this.next_page = next; this.previous_page = previous; this.size_page = size; this.toc_page = toc; } // goto to the next page of the current page function next(page) { if (page.next_page != null) { return gotoPage(page.next_page); } return false; } // goto to the previous page of the current page function previous(page) { if (page.previous_page != null) { return gotoPage(page.previous_page); } } // goto to the size page of the current page function sizer(page) { if (page.size_page != null) { return gotoPage(page.size_page); } return false; } // goto to the table of content page function toc(page) { if (page.toc_page != null) { return gotoPage(page.toc_page); } return false; } // the event dispatcher function eventDispatcher(page) { var keyCode = getKeyCode(window.event); switch (keyCode) { case '13': // return case '32': // space. used by IE to scroll the document ... case '110': // N case '78': // n return next(page); // case 'c32': // ctrl+space case '98': // b case '66': // B case '112': // p case '80': // P return previous(page); case '115': // s case '83': // S return sizer(page); case '116': // T case '84': // t return toc(page); default: return false; } } // find link informations in the HTML document function findDocument() { // i.e. getElementsByTagName() in DOM Level 1. // document.all.tags() is DOM Level 0. // coll is a NodeList var coll = document.all.tags("LINK"); var next = null; var prev = null; var size = null; var toc = null; for (i = 0; i < coll.length; i++) { // get the attribute rel on the LINK element node switch (coll(i).rel.toLowerCase()) { case 'next': next = coll(i).href; break; case 'prev': prev = coll(i).href; break; case 'change-size': size = coll(i).href; break; case 'contents': case 'index': case 'toc': toc = coll(i).href; break; } } return new Page(next, prev, size, toc); }