AS3: Method to convert degree-minute-second (DMS) form to decimal degree (DD) form.

dms2dd.as

/**
* degreeMinuteSecond2DecimalDegree()
*        About: Converts degree-minute-second (DMS) form to decimal degree (DD) form.
*      Returns: Decimal degree (DD) form.
*       @param: String.
*/
private function degreeMinuteSecond2DecimalDegree(s:String):Number {
	
	// http://www.ehow.com/how_2363249_form-decimal-degree-dd-form.html
	
	var n1:Array;
	var n2:Number = 1/60;
	var n3:Number;
	var n4:Number;
	var n5:Number;
	
	n1 = s.split(",");
	n3 = Number(n1[0]);
	n4 = Number(n1[1]);
	n5 = Number(n1[2]);
	
	return n3 + ((n4 * n2) + (n5 * n2 * n2));
	
};

Original/full code here.