document.onkeyup = KeyCheck;
var gotFormFocus = false;

function formUse(v) {
    gotFormFocus = v;
}
function KeyCheck(e) {

    if (!gotFormFocus) {
        var KeyID = (window.event) ? event.keyCode : e.keyCode;
        var AltKey = (window.event) ? event.altKey : e.altKey;
        var CtrlKey = (window.event) ? event.ctrlKey : e.ctrlKey;
        var ShiftKey = (window.event) ? event.shiftKey : e.shiftKey;
        
        // Check for modifier key
        if(!AltKey && !CtrlKey && !ShiftKey) {

            switch(KeyID) {

                case 37:
                var pageprev = document.getElementById('pageprev');
                if ( pageprev ) {
                    var a = pageprev.getElementsByTagName("a");
                    if(a.length > 0 && a[0].href)
                        window.location.href = a[0].href;
                    
                }
                break;

                case 39:
                var pagenext = document.getElementById('pagenext');
                if ( pagenext ) {
                    var a = pagenext.getElementsByTagName("a");
                    if(a.length > 0 && a[0].href)
                        window.location.href = a[0].href;
                    
                }
                break;

                case 49:
                setActiveStyleSheet('Lettergrootte klein');
                break;

                case 50:
                setActiveStyleSheet('Lettergrootte normaal');
                break;

                case 51:
                setActiveStyleSheet('Lettergrootte groot');
                break;


                case 65:
                window.location.href = "/watersportverenigingen/"
                break;

                case 66:
                window.location.href = "/comitevanaanbeveling/"
                break;

                case 67:
                window.location.href = "/contact/"
                break;

                case 68:
                window.location.href = "/donateurs/"
                break;

                case 69:
                window.location.href = "/evenementen/"
                break;

                case 70:
                window.location.href = "/fotosvideos/"
                break;

                case 72:
                window.location.href = "/"
                break;

                case 73:
                window.location.href = "/zeilscholen/"
                break;

                case 76:
                window.location.href = "/links/"
                break;

                case 77:
                window.location.href = "/deelnemers/"
                break;

                case 78:
                window.location.href = "/nieuws/"
                break;

                case 79:
                window.location.href = "/onzevloot/"
                break;

                case 82:
                window.location.href = "/zeilervaringen/"
                break;

                case 83:
                window.location.href = "/sailability/"
                break;

                case 84:
                showhide('keypressuitleg');showhide('flashberichtSwf');
                break;

                case 85:
                if ((pageprev = document.getElementById('pagelist')) !== null) {
                    a = pageprev.getElementsByTagName("a");
                    if(a.length > 0 && a[0].href)
                        window.location.href = a[0].href;
                    
                }
                break;

                case 86:
                window.location.href = "/vrijwilligers/"
                break;

                case 87:
                window.location.href = "/worldwide/"
                break;

                case 90:
                window.location.href = "/zeildagen/"
                break;

            }
        }
    }
}