function left(a,b)
{if(b<=0)return"";if(b>String(a).length)return a;return String(a).substring(0,b);}

function disableselect(e)
{
	if(e!=undefined)
	{
		var s=e.target.id;
		if(left(s,5)=="Track"||left(s,6)=="Handle") return false;
	} else { return false; }
	return true;
}

if (typeof document.onselectstart!="undefined")
	document.onselectstart=disableselect;
else
	document.onmousedown=disableselect;