This'll refresh the image only at 3 seconds (3000msec)... you can figure your "link'n'lightbox'n'etc"...<img
src="https://radar.weather.gov/ridge/standard/KLNX_loop.gif?&t=" onload='setTimeout(function() {src = src.substring(0, (src.lastIndexOf("t=")+2))+(new Date()).getTime()}, 3000)' onerror='setTimeout(function() {src = src.substring(0, (src.lastIndexOf("t=")+2))+(new Date()).getTime()}, 3000)' alt='KLNX Loop 3 Sec Refresh'>