docs: function _parseDurationString(d,durStr){
  	var matchMade;
  	//parse string
  	//eg 1y1M1d1h1m1s1ms
  	//abbrev
  	for(var i=0,len=_durationRegexp.length;i<len;i++){
  		
  		//for multiple matches on same regegexp we could use exec
  		while (matchMade = _durationRegexp[i].re.exec(durStr)) {
  			d[_durationRegexp[i].key]+=parseFloat((matchMade[1]||"0").replace(",","."));
  		}
  	}
  	return d;
  }