added event on numeric keypad
diff --git a/erpnext/public/js/pos/pos.html b/erpnext/public/js/pos/pos.html
index c634135..1019647 100644
--- a/erpnext/public/js/pos/pos.html
+++ b/erpnext/public/js/pos/pos.html
@@ -73,15 +73,15 @@
 					{% for(var i=0; i<3; i++) { %}
 						<div class="row text-right">
 							{% for(var j=i*3; j<(i+1)*3; j++) { %}
-								<button type="button"  class="btn btn-default pos-keyboard-key">{{j+1}}</button>
+								<button type="button"  class="btn btn-default numeric-keypad" val="{{j+1}}">{{j+1}}</button>
 							{% } %}
-							<button type="button" class="btn text-center btn-default pos-keyboard-key">{{ chartData[i] }}</button>
+							<button type="button" id = "pos-item-{{ chartData[i].toLowerCase() }}" class="btn text-center btn-default numeric-keypad pos-operation">{{ chartData[i] }}</button>
 						</div>
 					{% } %}
 					<div class="row text-right">
-						<button type="button"  class="btn btn-default delete-btn">Del</button>
-						<button type="button"  class="btn btn-default pos-keyboard-key">0</button>
-						<button type="button"  class="btn btn-default pos-keyboard-key">.</button>
+						<button type="button"  class="btn btn-default numeric-keypad numeric-del">Del</button>
+						<button type="button"  class="btn btn-default numeric-keypad" val="0">0</button>
+						<button type="button"  class="btn btn-default numeric-keypad" val=".">.</button>
 						<button type="button" class="btn btn-primary pos-pay">Pay</button>
 					</div>
 		        </div>