slider.js vertical slider inverse range correction

                function onKeyDown(e) {
                        if(!kbEnabled) return true;

                        e = e || document.parentWindow.event;
                        var kc = e.keyCode != null ? e.keyCode : e.charCode;

                        if ( kc < 33 || (kc > 40 && (kc != 45 && kc != 46))) return true;

                        var value = tagName == "input" ? parseFloat(inp.value) : inp.selectedIndex;
                        if(isNaN(value) || value < Math.min(min,max)) value = Math.min(min,max);

                        if( kc == 37 || kc == 40 || kc == 46 || kc == 34) {
                                // left, down, ins, page down
                                if (min < max)
                                        value -= (e.ctrlKey || kc == 34 ? maxInc : inc)
                                else
                                        value += (e.ctrlKey || kc == 34 ? maxInc : inc)
                        } else if( kc == 39 || kc == 38 || kc == 45 || kc == 33) {
                                // right, up, del, page up
                                if (min < max)
                                        value += (e.ctrlKey || kc == 33 ? maxInc : inc)
                                else
                                        value -= (e.ctrlKey || kc == 33 ? maxInc : inc)
                        } else if( kc == 35 ) {
                                // end
                                value = Math.max(min,max);
                        } else if( kc == 36 ) {
                                // home
                                value = Math.min(min,max);
                        };

                        valueToPixels(value);
                        callback("update");

                        // Opera doesn't let us cancel key events so the up/down arrows and home/end buttons will scroll the screen - which sucks
                        return stopEvent(e);
                };