var _OUTPUT=1; /* set to 1 to have the function output the result -return true if converted
                * set to 0 to have the function not output anything -returns the value
				*/
function formatPhone(num)
{ 
  num=num.replace(/\D/g,"");
  
  var _return=false;
  /*
   * 7181238748 to (718)123-8748
   */ 

  if(num.length != 10)
  { 
    /* 
     * if user did not enter 10 digit phone number then simply print whatever user entered 
     */ 
	_return=_OUTPUT?num:false;
  } 
  else
  { 
    /* formating phone number here */ 
	_return="(";
	var ini = num.substring(0,3);
	_return+=ini+") ";
	var st = num.substring(3,6);
	_return+=st+"-";
	var end = num.substring(6,10);
	_return+=end;
  }
  return _return; 
}