Simple floating point safe multiplication method

Math.mult = function(a, b) {
	var aSplitted = a.toString().split('.');
	var bSplitted = b.toString().split('.');

	var aDelta = (aSplitted[1] ? aSplitted[1] : "").length;
	var bDelta = (bSplitted[1] ? bSplitted[1] : "").length;

	// a * b
	return ((a * Math.pow(10, aDelta)) * (b * Math.pow(10, bDelta))) / (Math.pow(10, aDelta) * Math.pow(10, bDelta));
};