added add row button

JavaScript Files/Add Row Button.js

@@ -0,0 +1,23 @@
+Qualtrics.SurveyEngine.addOnReady(function () {
+	show_row = 3;
+	choice_rows = this.getChoiceContainer().querySelectorAll("[class*='Choice']");
+	choice_rows[choice_rows.length - 1].insertAdjacentHTML(
+		"afterend",
+		"<input type='button' id='row_adder' value='+' name='+' />"
+	);
+	for (i = show_row; i < choice_rows.length; i++) {
+		choice_rows[i].hide();
+	}
+	add_row = this.getChoiceContainer().querySelector("#row_adder");
+	add_row.onclick = new_row;
+
+	function new_row() {
+		if (show_row < choice_rows.length) {
+			choice_rows[show_row].show();
+			show_row++;
+        }
+        else{
+            alert("You've reached the maximum number of permissible rows");
+        }
+	}
+});