Ang 3617 soongilchoi

http://jira2.lgsvl.com/browse/ANG-3617

TimeMachine application sets the content property as String Array at several position
So, var firstCharCode = this.content.charCodeAt(0) makes error message like the bellowing

{code}
TypeError: 'undefined' is not a function (evaluating 'this.content.charCodeAt(0)') 
{code}

It's because String array is not string and does not have charCodeAt function

_marquee_checkRtl function needs some guard to protect this error