Index: lams_tool_doku/web/pages/authoring/advance.jsp
===================================================================
diff -u -r62aaf160878735888d077bf28fac3c1989bb8fbd -r7188dda72df3933f73dba00d7d1eb44c86c72e8d
--- lams_tool_doku/web/pages/authoring/advance.jsp	(.../advance.jsp)	(revision 62aaf160878735888d077bf28fac3c1989bb8fbd)
+++ lams_tool_doku/web/pages/authoring/advance.jsp	(.../advance.jsp)	(revision 7188dda72df3933f73dba00d7d1eb44c86c72e8d)
@@ -24,7 +24,7 @@
 	<div class="form-inline">
 		<label for="timeLimit">
 			<fmt:message key="label.time.limit" />&nbsp;
-			<form:input path="dokumaran.timeLimit" size="3" id="timeLimit" cssClass="form-control input-sm"/>
+			<form:input path="dokumaran.timeLimit" type="number" min="0" size="3" id="timeLimit" cssClass="form-control input-sm"/>
 		</label>
 	</div>
 	
Index: lams_tool_doku/web/pages/authoring/authoring.jsp
===================================================================
diff -u -re739ff3cdb84a0f87795156409657e96eb8f21b6 -r7188dda72df3933f73dba00d7d1eb44c86c72e8d
--- lams_tool_doku/web/pages/authoring/authoring.jsp	(.../authoring.jsp)	(revision e739ff3cdb84a0f87795156409657e96eb8f21b6)
+++ lams_tool_doku/web/pages/authoring/authoring.jsp	(.../authoring.jsp)	(revision 7188dda72df3933f73dba00d7d1eb44c86c72e8d)
@@ -6,7 +6,12 @@
 <lams:head>
 	<title><fmt:message key="label.author.title" /></title>
 	<%@ include file="/common/tabbedheader.jsp"%>
-
+	
+	<style>
+		#timeLimit {
+			width: 70px;
+		}
+	</style>
 	<script type="text/javascript">
         function init(){
             var tag = document.getElementById("currentTab");
@@ -24,6 +29,16 @@
 	    	// end optional tab controller stuff
 	    	selectTab(tabId);
         }
+        
+        $(document).ready(function(){
+			$('#timeLimit').change(function() {
+				let widget = $(this),
+					timeLimit = widget.val();
+				if (!timeLimit || timeLimit < 0) {
+					widget.val(0);
+				}
+			});
+        });
     </script>
 </lams:head>