function previewGeneric(addon, name, typeName, price, pic) {
    document.getElementById(addon + 'ColName').innerHTML = name;
    document.getElementById(addon + 'ColType').innerHTML = typeName;
    document.getElementById(addon + 'ColPrice').innerHTML = price;
    document.getElementById(addon + 'ColImg').firstChild.src = pic;
};

function previewColour(name, typeName, price, pic) {
    previewGeneric('ext', name, typeName, price, pic);
};

function previewColourExt(name, typeName, price, pic, pack) {
    previewGeneric('ext', name, typeName, price, pic);
    document.getElementById('extColPack').innerHTML = pack;
};

function previewTop(name, typeName, price, pic) {
    previewGeneric('top', name, typeName, price, pic);
};

function previewTrim(name, typeName, price, pic, pack) {
    previewGeneric('trm', name, typeName, price, pic);
    document.getElementById('trmColPack').innerHTML = pack;
};