How to show Day of Week

JavaScript Code:

<script type="text/javascript">

function GetDays()

{

    var getDay=new Date();

    if(getDay.getDay()>0 && getDay.getDay()<5)

    {

      alert("It’s a WeekDay!");

    }

    else

    {

       alert("Its’ WeekEnd!")    

    }

}

</script>

HTML Code:

<input type="btn_getdays" onclick="GetDays()" value="Show Day!" />