diff --git a/multiple-selection.js b/multiple-selection.js
index 6e1f4ed..7ca961a 100644
--- a/multiple-selection.js
+++ b/multiple-selection.js
@@ -3,6 +3,9 @@
  * @author Maksym Pomazan
  * @version 0.0.3
  */
+
+
+;;(function(){
 function getSelectableElements(element) {
     var out = [];
     var childs = element.children();
@@ -112,7 +115,13 @@ angular.module('multipleSelection', [])
                  * @return {Object} result Transformed object
                  */
                 function transformBox(startX, startY, endX, endY) {
+                    var topBorder = element[0].offsetTop;
+                    var bottomBorder = element[0].offsetHeight + topBorder;
+                    var leftBorder = element[0].offsetLeft;
+                    var rightBorder = element[0].offsetWidth + leftBorder;
 
+                    endY = Math.min(Math.max(topBorder, endY), bottomBorder);
+                    endX = Math.min(Math.max(leftBorder, endX), rightBorder);
                     var result = {};
 
                     if (startX > endX) {
@@ -243,3 +252,4 @@ angular.module('multipleSelection', [])
             }
         };
     }]);
+})();