derp

// JavaScript Document
function flip() {
	var result = flipString(document.f.original.value);
	document.f.flipped.value = result;
}

function flipString(aString) {
	aString = aString.toLowerCase();
	var last = aString.length - 1;
	var result = "";
	for (var i = last; i >= 0; --i) {
		result += derpChar(aString.charAt(i))
	}
	return result;
}

function derpChar(c) {
	if (c == 'a') {
		return 'er'
	}
	else if (c == 'e') {
		return 'er'
	}
	else if (c == 'i') {
		return 'er'
	}
	else if (c == 'o') {
		return 'er'
	}
	else if (c == 'u') {
		return 'er'
	}
	return c;
}