--- loncom/homework/inputtags.pm	2016/08/05 23:17:10	1.333.2.4
+++ loncom/homework/inputtags.pm	2019/08/07 21:10:37	1.333.2.6
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # input  definitons
 #
-# $Id: inputtags.pm,v 1.333.2.4 2016/08/05 23:17:10 raeburn Exp $
+# $Id: inputtags.pm,v 1.333.2.6 2019/08/07 21:10:37 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -667,9 +667,11 @@ sub file_selector {
         $result .= $constraints.'<br />';
     }
     if ($which eq 'uploadonly' || $which eq 'both') { 
-	$result.=&mt('Submit a file: (only one file per submission)').
-	    ' <br /><input type="file" size="50" name="HWFILE'.
-	    $jspart.'_'.$id.'" id="HWFILE'.$jspart.'_'.$id.'" /><br />';
+        my $free_space = $maxfilesize * 1048576;
+        $result .= &mt('Submit a file: (only one file per submission)').
+            ' <br /><input type="file" size="50" name="HWFILE'.$jspart.'_'.$id.
+            '" id="HWFILE'.$jspart.'_'.$id.'" class="LC_flUpload" />'.
+            '<input type="hidden" id="free_space" value="'.$free_space.'" /><br />';
     }
     if ( $which eq 'both') {
 	$result.='<br />'.'<strong>'.&mt('OR:').'</strong><br />';
@@ -1871,8 +1873,13 @@ sub previous_tries {
     my $tries_text = &get_tries_text('link');
     my $prefix = $env{'form.request.prefix'};
     $prefix =~ tr{.}{_};
-    my $function_name = "LONCAPA_previous_tries_".$prefix.
-	$Apache::lonxml::curdepth.'_'.$env{'form.counter'};
+    my $function_name = 'LONCAPA_previous_tries_'.$prefix;
+    if (($env{'request.state'} eq 'construct') || ($id =~ /[._]|[^\w\s\-]/)) {
+        $function_name .= $Apache::lonxml::curdepth;
+    } else {
+        $function_name .= &js_escape($id);
+    }
+    $function_name .= '_'.$Apache::lonxml::counter;
     my $result = &Apache::loncommon::modal_adhoc_window($function_name,420,410,$output,&mt($tries_text))."<br />";
     return $result;
 }