diff --git a/kaform.js b/kaform.js
index 1fad96a..c723eb8 100644
--- a/kaform.js
+++ b/kaform.js
@@ -8,6 +8,7 @@ function renumberTableRows(){
     for (var i = 0, row; row = table.rows[i]; i++) {
 //	row.cells[0].innerHTML=row_no++;
     }
+	return i;
 }
 
 
@@ -23,10 +24,20 @@ function isFloat(val) {
 }
 
 
+function disableCurrency()
+{
+	if (countRows()>0){
+		document.getElementById("a_currency").disabled=true;
+	}
+	else {
+		document.getElementById("a_currency").disabled=false;
+	}
 
+}
 
 function deleteTableRow(rowId){
 
+
     var target = document.getElementById("upload-target"+rowId);
 //            this.message = app.message;    
 //   var children = target.children;
@@ -50,9 +61,12 @@ function deleteTableRow(rowId){
     var element = document.getElementById("trow"+rowId);
 
     element.parentNode.removeChild(element);
+	disableCurrency();
     renumberTableRows();
 //    alert(rowId);
-    
+
+
+	
 }
 
 
@@ -200,6 +214,8 @@ function addTableRow(){
 //    renumberTableRows();
     currentRowId++;
 	reset2();
+	disableCurrency();
+	
 }
 
 
@@ -357,3 +373,6 @@ function checkIban()
                         }
                 }
 */
+
+
+