function handleTechClick() {
    window.location = "tech.aspx"
}

function handleTech() {
    document.getElementById('tech').style.backgroundColor = '#666666';
}

function handleTechOut() {
    document.getElementById('tech').style.backgroundColor = '#000000';
}

function handleProductsClick() {
    window.location = "products.aspx"
}

function handleProducts() {
    document.getElementById('products').style.backgroundColor = '#666666';
}

function handleProductsOut() {
    document.getElementById('products').style.backgroundColor = '#000000';
}


function handleOverseasClick() {
    window.location = "overseas.aspx"
}

function handleOverseas() {
    document.getElementById('overseas').style.backgroundColor = '#666666';
}

function handleOverseasOut() {
    document.getElementById('overseas').style.backgroundColor = '#000000';
}

function handleBoxOver(id) {
    document.getElementById(id + '_Arrow').style.backgroundImage = "url('siteMainImages/homepage linksbutton2.png')"
}

function handleBoxOut(id) {
    document.getElementById(id + '_Arrow').style.backgroundImage = "url('siteMainImages/homepage linksbutton1.png')"
}