function toggle_visibility(id) {
    var e = document.getElementById(id);
    if (e.style.display == 'block')
        e.style.display = 'none';
    else
        e.style.display = 'block';
}
function toggle_plusminus(imgid, tblid) {
    var e = document.getElementById(tblid);
    var i = document.getElementById(imgid);
    if (e.style.display == 'block')
        i.src = '/assets/img/bgs/Minus.gif';
    else
        i.src = '/assets/img/bgs/Plus.gif';
}
function homenavmouseover(x) {
    document.getElementById('HomeNav1').src = '/assets/img/lewmar.jpg';
    document.getElementById('HomeNav2').src = '/assets/img/sailing.jpg';
    document.getElementById('HomeNav3').src = '/assets/img/power.jpg';
    document.getElementById('HomeNav4').src = '/assets/img/racing.jpg';
    document.getElementById('cLewmar').style.display = 'none';
    document.getElementById('cSailing').style.display = 'none';
    document.getElementById('cPowerboat').style.display = 'none';
    document.getElementById('cRacing').style.display = 'none';

    if (x == '1') {
        document.getElementById('HomeNav1').src = '/assets/img/lewmar-over.jpg';
        document.getElementById('cLewmar').style.display = '';
    } else if (x == '2') {
        document.getElementById('HomeNav2').src = '/assets/img/sailing-over.jpg';
        document.getElementById('cSailing').style.display = '';
    } else if (x == '3') {
        document.getElementById('HomeNav3').src = '/assets/img/power-over.jpg';
        document.getElementById('cPowerboat').style.display = '';
    } else {
        document.getElementById('HomeNav4').src = '/assets/img/racing-over.jpg';
        document.getElementById('cRacing').style.display = '';
    }
}

function ClearText(textbox, text) {
    if (textbox.value == text) {
        textbox.value = "";
    }
}
function PopulateText(textbox, text) {
    if (textbox.value == "") {
        textbox.value = text;
    }
}
function isNumber() {
    if ((event.keyCode < 44 || (event.keyCode > 57 && event.keyCode < 96) || event.keyCode > 105 || event.keyCode == 45 || event.keyCode == 47) && event.keyCode != 8) event.returnValue = false;
}