function roundAmount(n) {   
	var s = "" + Math.round(n*100)/100   
	var i = s.indexOf('.')
	if (i < 0) return s + ".00"
	var t =   s.substring(0,i+1) + s.substring(i+1,i+3)
	if(i + 2 == s.length) t += "0"
	return  t
}