diff --git a/expo/admin.py b/expo/admin.py
index 7c170d9..52138af 100644
--- a/expo/admin.py
+++ b/expo/admin.py
@@ -16,13 +16,13 @@ class SurveyAdmin(admin.ModelAdmin):
     inlines = (ScannedImageInline,)
 
 class LogbookEntryAdmin(admin.ModelAdmin):
-    search_fields = ('title',)
+    search_fields = ('title','expedition__year')
 
 class PersonAdmin(admin.ModelAdmin):
     search_fields = ('first_name','last_name')
     
 class PersonExpeditionAdmin(admin.ModelAdmin):
-    search_fields = ('person__first_name',)
+    search_fields = ('person__first_name','expedition__year')
 
 admin.site.register(Photo)
 admin.site.register(Cave)
diff --git a/expo/models.py b/expo/models.py
index 2e8dc88..ee3179b 100644
--- a/expo/models.py
+++ b/expo/models.py
@@ -19,11 +19,29 @@ class Expedition(models.Model):
     def __unicode__(self):
         return self.year
 
+    def GuessDateFrom(self):
+	try:
+		return self.logbookentry_set.order_by('date')[0].date
+	except IndexError:
+		pass
+
+    def GuessDateTo(self):		# returns the date of the last logbook entry in the expedition
+	try:
+		return self.logbookentry_set.order_by('date')[-1].date
+	except IndexError:
+		pass
+
     def ListDays(self):
-	if self.start_date and self.end_date:
+	if self.date_from and self.date_to:
 		res=[]
-		date=self.start_date
-		while date <= self.end_date:
+		date=self.date_from
+		while date <= self.date_to:
+			res.append(date)
+			date+=datetime.timedelta(days=1)
+		return res
+	elif self.GuessDateFrom() and self.GuessDateTo(): 	# if we don't have the real dates, try it with the dates taken from the earliest and latest logbook entries
+		date=self.GuessDateFrom()
+		while date <= self.GuessDateTo():
 			res.append(date)
 			date+=datetime.timedelta(days=1)
 		return res
@@ -78,18 +96,18 @@ class PersonExpedition(models.Model):
         if self.nickname:
             res.append(self.nickname)
         return res
-
+	    
     def ListDays(self):
-	if self.from_date and self.to_date:
+	if self.date_from and self.date_to:
 		res=[]
-		date=self.from_date
-		while date <= self.to_date:
+		date=self.date_from
+		while date <= self.date_to:
 			res.append(date)
 			date+=datetime.timedelta(days=1)
 		return res
 
     def ListDaysTF(self):
-	if self.from_date and self.to_date:
+	if self.date_from and self.date_to:
 		res=[]
 		for date in self.expedition.ListDays():
 			res.append(date in self.ListDays())
diff --git a/templates/calendar.html b/templates/calendar.html
index a39556c..70d3ecf 100644
--- a/templates/calendar.html
+++ b/templates/calendar.html
@@ -9,12 +9,13 @@
     {% endif %}
 {% endblock %}
 
-{% block javascript %}
+{% block head %}
 <style type="text/css"> 
 <!--
-td.yes                     { background: #7f96e8; width: 80pt; font-size: 10pt }
-td.no                    { background: #ff6666; width: 80pt; font-size: 10pt }
-td.name                    { background: #7f96e8; width: 80pt; text-align:right; font-size: 10pt }
+.no                     { background: #7f96e8; width: 80pt; font-size: 10pt }
+.yes                    { background: #ff6666; width: 80pt; font-size: 10pt }
+.name                    { background: #999; width: 80pt; text-align:right; font-size: 10pt }
+.date                    { background: #999; width: 80pt; text-align:right; font-size: 10pt }
 --> 
 </style>
 
@@ -26,20 +27,20 @@ td.name                    { background: #7f96e8; width: 80pt; text-align:right;
         	<tr><td />
             	{% for date in expedition.ListDays %}               	
         	        {% ifchanged date.month %}
-    	                <td class="h">{{ date|date:"F" }}</td>
+    	                <td class="date">{{ date|date:"F" }}</td>
                     {% else %}
-                    	<td class="h"></td>
+                    	<td class="date"></td>
 	                {% endifchanged %}            
                 {% endfor %}                    
         	</tr>
             <tr><td />
             	{% for date in expedition.ListDays %}               	
-					<td class="h">{{ date|date:"D" }}</td>
+					<td class="date">{{ date|date:"D" }}</td>
                 {% endfor %}
             </tr>
         	<tr><td />
             	{% for date in expedition.ListDays %}               	
-					<td class="h">{{ date|date:"d" }}</td>
+					<td class="date">{{ date|date:"d" }}</td>
                 {% endfor %}
             </tr>
 
@@ -51,7 +52,7 @@ td.name                    { background: #7f96e8; width: 80pt; text-align:right;
                       {% for dateTF in personexpedition.ListDaysTF %}
                       		<td {{ dateTF|yesno:"class='yes',class='no'"|safe }}></td>
                       {% empty %}
-                      		<td colspan="{{ expedition.ListDays|length }}">No data yet.</td>
+                      		<td colspan="{{ expedition.ListDays|length }}"><center>No data.</center></td>
                       {% endfor %}