Adding javascript to prevent premature submission of forms when using a barcode scanner (or by hitting the enter key). Addresses Bug 2591

Signed-off-by: Galen Charlton <galen.charlton@liblime.com>

koha-tmpl/intranet-tmpl/prog/en/js/staff-global.js

@@ -69,4 +69,22 @@ YAHOO.util.Event.onContentReady("changelanguage", function () {
 				YAHOO.util.Event.addListener("showlang", "click", onYahooClick);
 
 				YAHOO.widget.Overlay.windowResizeEvent.subscribe(positionoMenu);
-            });
+            });
+			
+// http://jennifermadden.com/javascript/stringEnterKeyDetector.html
+function checkEnter(e){ //e is event object passed from function invocation
+	var characterCode; // literal character code will be stored in this variable
+	if(e && e.which){ //if which property of event object is supported (NN4)
+		e = e;
+		characterCode = e.which; //character code is contained in NN4's which property
+	} else {
+		e = event;
+		characterCode = e.keyCode; //character code is contained in IE's keyCode property
+	}
+
+	if(characterCode == 13){ //if generated character code is equal to ascii 13 (if enter key)
+		return false;
+	} else {
+		return true;
+	}
+}

koha-tmpl/intranet-tmpl/prog/en/modules/cataloguing/additem.tmpl

@@ -3,6 +3,9 @@
 <!-- TMPL_INCLUDE NAME="doc-head-close.inc" -->
 <script type="text/javascript">
 //<![CDATA[
+$(document).ready(function(){
+		$("fieldset.rows input").keydown(function(e){ return checkEnter(e); });
+});
 function active(numlayer)
 {
     for (i=10; i < 11 ; i++ ) {

koha-tmpl/intranet-tmpl/prog/en/modules/members/memberentrygen.tmpl

@@ -7,6 +7,7 @@
 <script type="text/JavaScript" language="JavaScript">
 //<![CDATA[
     $(document).ready(function() {
+		$("fieldset.rows input").keydown(function(e){ return checkEnter(e); });
         $("#guarantordelete").click(function() {
             $("#contact-details").hide().find('a').remove();
             $("#guarantorid, #contactname, #contactfirstname").each(function () { this.value = "" });