var body = document.body; body.className += " u-body u-xl-mode"; body.style.cssText += " "; var dataBg = ''; if (dataBg) { body.setAttribute('data-bg', dataBg); } Full build and demo of a semi-hollow fretless bass guitar featuring my daughter Caitlin's artwork. Specs Body/Neck Rimu/Hardwood Top Kauri Fret-board Matai with Puriri inlays Pickups Wilkinson J Pickups Hardware Wilkinson Open Gear Tuners and Wilkinson Bridge Frets none Photos 16