diff --git a/admin/schedule.php b/admin/schedule.php
index 10da4092..dec5416d 100644
--- a/admin/schedule.php
+++ b/admin/schedule.php
@@ -197,14 +197,18 @@
 
 		 var tablecellid=eventobj.hour+'_'+eventobj.minute+'_'+eventobj.location;
 
-		 var eheight=((eventobj.duration/15)*<?=$ROWHEIGHT?>)-<? echo $BORDERSIZE*2; ?>;
-		 var ewidth=$("#"+tablecellid).width()-<? echo $BORDERSIZE; ?>;
-
-		 var p=$("#"+tablecellid).offset();
-		 $("#"+item.id).css(p);
-		 $("#"+item.id).show();
-		 $("#"+item.id).height(eheight);
-		 $("#"+item.id).width(ewidth);
+		 if($("#"+tablecellid).length) {
+			 var eheight=((eventobj.duration/15)*<?=$ROWHEIGHT?>)-<? echo $BORDERSIZE*2; ?>;
+			 var ewidth=$("#"+tablecellid).width()-<? echo $BORDERSIZE; ?>;
+			 var p=$("#"+tablecellid).offset();
+			 $("#"+item.id).css(p);
+			 $("#"+item.id).show();
+			 $("#"+item.id).height(eheight);
+			 $("#"+item.id).width(ewidth);
+		 }
+		 else {
+			 $("#"+item.id).hide();
+		 }
 	 }
 	 );
  }