in js/libs/ical.js [31:42]
var parseParams = function(p){
var out = {}
for (var i = 0; i<p.length; i++){
if (p[i].indexOf('=') > -1){
var segs = p[i].split('=');
out[segs[0]] = parseValue(segs.slice(1).join('='));
}
}
return out || sp
}