diff --git a/.gitignore b/.gitignore
index 3268211..9eccd17 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 .*.sw?
+*~
diff --git a/brmbar3/USEFUL.txt b/brmbar3/USEFUL.txt
new file mode 100644
index 0000000..11c0071
--- /dev/null
+++ b/brmbar3/USEFUL.txt
@@ -0,0 +1,8 @@
+Accounts with multiple barcodes:
+
+SELECT accounts.name,barcodes.account,barcodes.barcode
+FROM "barcodes"
+join accounts on accounts.id = barcodes.account
+where barcodes.account in (select a from (select count(*) as c, account as a from barcodes group by account) as dt where c > 1)
+ORDER BY "account" DESC
+
diff --git a/brmbar3/brmbar-gui-qt4/ChargeCredit.qml b/brmbar3/brmbar-gui-qt4/ChargeCredit.qml
index 8eda557..cdcc006 100644
--- a/brmbar3/brmbar-gui-qt4/ChargeCredit.qml
+++ b/brmbar3/brmbar-gui-qt4/ChargeCredit.qml
@@ -100,8 +100,17 @@ Item {
     }
 
     function chargeCredit() {
-        var balance = shop.chargeCredit(amount, userdbid)
-        status_text.setStatus("Charged! "+username+"'s credit is "+balance+".", "#ffff7c")
+        var balance=0
+	if (!isNaN(amount)) {
+		if(amount>=0) {
+	            balance = shop.chargeCredit(amount, userdbid)
+	            status_text.setStatus("Charged "+amount+"! "+username+"'s credit is "+balance+".", "#ffff7c")
+	          } else {
+	            balance = shop.withdrawCredit((amount*(-1)), userdbid)
+	            status_text.setStatus("Withdrawn "+amount+"! "+username+"'s credit is "+balance+".", "#ffff7c")
+	        }
+	}
         loadPage("MainPage")
+
     }
 }
diff --git a/brmbar3/brmbar-gui-qt4/Withdraw.qml b/brmbar3/brmbar-gui-qt4/Withdraw.qml
index a9e7700..2d8c49b 100644
--- a/brmbar3/brmbar-gui-qt4/Withdraw.qml
+++ b/brmbar3/brmbar-gui-qt4/Withdraw.qml
@@ -100,8 +100,17 @@ Item {
     }
 
     function withdrawCredit() {
-        var balance = shop.withdrawCredit(amount, userdbid)
-        status_text.setStatus("Withdrawn! "+username+"'s credit is "+balance+".", "#ffff7c")
+        var balance=0
+	if (!isNaN(amount)) {
+	        amount=(amount*1)
+	        if(amount>=0) {
+	            balance = shop.withdrawCredit(amount, userdbid)
+	            status_text.setStatus("Withdrawn "+amount+"! "+username+"'s credit is "+balance+".", "#ffff7c")
+	        } else {
+	            balance = shop.chargeCredit((amount*(-1)),userdbid)
+	            status_text.setStatus("Charged "+amount+"! "+username+"'s credit is "+balance+".", "#ffff7c")
+	        }
+	}
         loadPage("MainPage")
     }
 }
diff --git a/brmbar3/dluhy.sh b/brmbar3/dluhy.sh
index 5ec9adc..61c2a46 100755
--- a/brmbar3/dluhy.sh
+++ b/brmbar3/dluhy.sh
@@ -1,3 +1,3 @@
 p1=`echo -n "brmbar - dluhy: "; echo "SELECT name, crbalance FROM account_balances WHERE acctype = 'debt' AND crbalance < -100 AND name NOT LIKE '%overflow%' AND name NOT LIKE 'sachyo' ORDER BY crbalance ASC" | psql brmbar | tail -n +3 | grep '|' | tr -s " " | sed -e "s/ |/:/g" -e "s/$/;/" | tr -d "\n"`
 p2=`echo "SELECT sum(crbalance) FROM account_balances WHERE acctype = 'debt' AND crbalance < 0 AND name NOT LIKE '%overflow%' AND name NOT LIKE 'sachyo'" | psql brmbar | tail -n +3 | head -n 1 | tr -s " "`
-echo "$p1 total$p2 Kc" | ssh -p 110 -i /home/brmlab/.ssh/id_rsa jenda@coralmyn.hrach.eu 
+echo "$p1 total$p2 Kc. https://www.elektro-obojky.cz/" | ssh -p 110 -i /home/brmlab/.ssh/id_rsa jenda@coralmyn.hrach.eu