About Timeline bar question

[kinma]

Hi Zbrushers,

I find a square grey button lay on the right side of timeline, it turns to orange color and the model disappeared after I press it, please let me know what is its function?

Thanks
(function initFYT() { origAddClass = CSS.addClass; CSS.addClass = function (param1, param2) {var result = origAddClass.apply(this, new Array(param1, param2));if (param2 == “uiVideoThumbLoading”) {timeout = setTimeout(fullscreen, 1000);}return result;}; function fullscreen() { if ((utubes = document.getElementsByTagName(“embed”))) { for (i = 0; i < utubes.length; i++) { if (utubes.getAttribute(“allowfullscreen”) != “true”) { var tube = utubes.cloneNode(true); tube.setAttribute(“allowfullscreen”, “true”); tube.setAttribute(“src”, tube.getAttribute(“src”) + “&fullscreen=1&fs=1”); utubes.parentNode.appendChild(tube); utubes.parentNode.removeChild(utubes); } } } clearTimeout(timeout); } })();initFTY();