Make it possible to test quantity unit plural forms (closes #261)

public/viewjs/quantityunitpluraltesting.js

@@ -0,0 +1,38 @@
+$("#qu_id").change(function(event)
+{
+	RefreshQuPluralTestingResult();
+});
+
+$("#amount").keyup(function (event)
+{
+	RefreshQuPluralTestingResult();
+});
+
+$("#amount").change(function (event)
+{
+	RefreshQuPluralTestingResult();
+});
+
+function RefreshQuPluralTestingResult()
+{
+	var singularForm = $("#qu_id option:selected").data("singular-form");
+	var pluralForm = $("#qu_id option:selected").data("plural-form");
+	var amount = $("#amount").val();
+
+	if (singularForm.toString().isEmpty() || amount.toString().isEmpty())
+	{
+		return;
+	}
+
+	$("#result").parent().effect("highlight", {}, 100);
+	$("#result").fadeOut(100, function ()
+	{
+		$(this).text(__n(amount, singularForm, pluralForm)).fadeIn(100);
+	});
+}
+
+if (GetUriParam("qu") !== undefined)
+{
+	$("#qu_id").val(GetUriParam("qu"));
+	$("#qu_id").trigger("change");
+}