fix deprecated align attributes

index.html

@@ -42,10 +42,9 @@
     <table class="title_table">
 		<tr>
 			<td class="blank_title_cell"><img src="ubblogo.png" /></td>
-		<td class="project_name"><label for="project_name">{{strings.project_name}} </label><input type="text"
-																								   id="project_name"
-																								   name="project_name"
-																								   value=""/></td>
+			<td class="project_name">
+				<label for="project_name">{{strings.project_name}} </label><input type="text" id="project_name" name="project_name" value=""/>
+			</td>
 			<td class="options">
 				<input ng-click="show_help();" type="button" value="{{strings.help}}" />
 				<label>
@@ -63,7 +62,7 @@
 			<td class="main_td">
 				{{strings.code}}<hr />
 				<div class="scrollcode">
-		    <table align="center" class="table_background">
+					<table style="margin: 0 auto;" class="table_background">
 						<tr ng-repeat="(key, line) in code_lines">
 							<td id="line1_{{key}}" ng-click="select_line(key, false);" class="table_cell line_number_td" >{{line.line}}</td>
 							<td id="line2_{{key}}" class="table_cell">
@@ -92,10 +91,10 @@
 				{{strings.result}}
 				<hr />
 				<div class="scrollresult">
-		    <table align="center">
+					<table style="margin: 0 auto;">
 						<tr>
 							<td class="result_table">
-				<table align="center" class="table_background">
+								<table style="margin: 0 auto;" class="table_background">
 									<tr>
 										<td class="title_td">Ln</td>
 										<td class="title_td">Ac</td>
@@ -121,7 +120,7 @@
 								</table>
 							</td>
 							<td class="result_table">
-				<table align="center" class="table_background">
+								<table style="margin: 0 auto;" class="table_background">
 									<tr>
 										<td class="title_td">{{strings.screen}}</td>
 									</tr>
@@ -152,11 +151,11 @@
 		</tr>
     </table>
     <div class="credits">
-		<b>JVON Web</b><br/>
+		<b>JVON Web 1.1.2</b><br/>
 		{{strings.credits_description}}&nbsp;<b>{{strings.credits_john}}</b><br/>
 		{{strings.credits_cromer}}<br/>
-		Ingeniería Civil en Informática, Universidad del Bío Bío, 2015<br/>
-		<a target="_blank" href="jvon-1.1.1.apk">Version android</a>
+		Ingeniería Civil en Informática, Universidad del Bío Bío, 2015-2020<br/>
+		<!--<a target="_blank" href="jvon-1.1.1.apk">Version android</a>-->
     </div>
 </body>
 </html>

js/jvon-interpret.js

@@ -678,7 +678,7 @@ document.addEventListener('DOMContentLoaded', function () {
         var syntax = $scope.check_syntax(value);
 		var sqr;
         if (syntax.type == "blank") {
-            if ($scope.ac == "") {
+            if (typeof $scope.ac != 'number') {
                 alert($scope.strings.error_ac);
                 $scope.stop_code();
             }