function highlightPlayButtons(_1){
var i=0;
var _3;
var _4;
if(_1==1){
_4="modClipStart modClipStartHighlight";
}else{
_4="modClipStart";
}
while(document.getElementsByTagName("span")[i]){
_3=document.getElementsByTagName("span")[i];
if(_3.className.indexOf("modClipStart")!=-1){
_3.className=_4;
}
i++;
}
}