function OverlayBoxTabImage1(event) {
    if (event == 'onclick') {
        document.getElementById('Tab1').style.display = 'block'; document.getElementById('Tab2').style.display = 'none'; document.getElementById('Tab3').style.display = 'none'; document.getElementById('TabImage1').src = '/Images/Tabs/tab-CarSearch_On.png'; document.getElementById('TabImage2').src = '/Images/Tabs/tab-BookService_Off.png'; document.getElementById('TabImage3').src = '/Images/Tabs/tab-Offers_Off.png';
    }
    else if (event == 'onmouseover') {
        if (document.getElementById('Tab1').style.display != 'block') document.getElementById('TabImage1').src = '/Images/Tabs/tab-CarSearch_Hover.png';
    }
    else if (event == 'onmouseout') {
        if (document.getElementById('Tab1').style.display != 'block') document.getElementById('TabImage1').src = '/Images/Tabs/tab-CarSearch_Off.png';
    }
}

function OverlayBoxTabImage2(event) {
    if (event == 'onclick') {
        document.getElementById('Tab2').style.display = 'block'; document.getElementById('Tab1').style.display = 'none'; document.getElementById('Tab3').style.display = 'none'; document.getElementById('TabImage1').src = '/Images/Tabs/tab-CarSearch_Off.png'; document.getElementById('TabImage2').src = '/Images/Tabs/tab-BookService_On.png'; document.getElementById('TabImage3').src = '/Images/Tabs/tab-Offers_Off.png';
    }
    else if (event == 'onmouseover') {
        if (document.getElementById('Tab2').style.display != 'block') document.getElementById('TabImage2').src = '/Images/Tabs/tab-BookService_Hover.png';
    }
    else if (event == 'onmouseout') {
        if (document.getElementById('Tab2').style.display != 'block') document.getElementById('TabImage2').src = '/Images/Tabs/tab-BookService_Off.png';
    }
}

function OverlayBoxTabImage3(event) {
    if (event == 'onclick') {
        document.getElementById('Tab3').style.display = 'block'; document.getElementById('Tab2').style.display = 'none'; document.getElementById('Tab1').style.display = 'none'; document.getElementById('TabImage1').src = '/Images/Tabs/tab-CarSearch_Off.png'; document.getElementById('TabImage2').src = '/Images/Tabs/tab-BookService_Off.png'; document.getElementById('TabImage3').src = '/Images/Tabs/tab-Offers_On.png';
    }
    else if (event == 'onmouseover') {
        if (document.getElementById('Tab3').style.display != 'block') document.getElementById('TabImage3').src = '/Images/Tabs/tab-Offers_Hover.png';
    }
    else if (event == 'onmouseout') {
        if (document.getElementById('Tab3').style.display != 'block') document.getElementById('TabImage3').src = '/Images/Tabs/tab-Offers_Off.png';
    }
}