var body = document.body; body.className += " u-body u-xl-mode"; body.style.cssText += " "; var dataBg = ''; if (dataBg) { body.setAttribute('data-bg', dataBg); } Simtec Simulation of Flame Spread and Fire Growth Simtec Simulation of Flame Spread over Horizontal Thin Plate Simtec Simulation of Flame Spread in Room Fire 189