text: /**
   1. Make a map like java. You can use this map like this : var myMap = new Map();
   2. myMap.put("key","value"); var key = myMap.get("key");
   */
  function Map() {
  
      this.elements = new Array();
  
      this.size = function() {
          return this.elements.length;
      }
  
      this.isEmpty = function() {
          return (this.elements.length < 1);
      }
  
      this.clear = function() {
          this.elements = new Array();
      }
  
      this.put = function(_key, _value) {
          if (!this.containsKey(_key))
              this.elements.push({
                  key : _key,
                  value : _value
              });
      }
  
      this.remove = function(_key) {
          var bln = false;
  
          try {
              for (i = 0; i < this.elements.length; i++) {
                  if (this.elements[i].key == _key) {
                      this.elements.splice(i, 1);
                      return true;
                  }
              }
          } catch (e) {
              bln = false;
          }
          return bln;
      }
  
      this.get = function(_key) {
          try {
              for (i = 0; i < this.elements.length; i++) {
                  if (this.elements[i].key == _key) {
                      return this.elements[i].value;
                  }
              }
          } catch (e) {
              return null;
          }
      }
  
      this.element = function(_index) {
          if (_index < 0 || _index >= this.elements.length) {
              return null;
          }
          return this.elements[_index];
      }
  
      this.containsKey = function(_key) {
          var bln = false;
          try {
              for (i = 0; i < this.elements.length; i++) {
                  if (this.elements[i].key == _key) {
                      bln = true;
                  }
              }
          } catch (e) {
              bln = false;
          }
          return bln;
      }
  
      this.containsValue = function(_value) {
          var bln = false;
          try {
              for (i = 0; i < this.elements.length; i++) {
                  if (this.elements[i].value == _value) {
                      bln = true;
                  }
              }
          } catch (e) {
              bln = false;
          }
          return bln;
      }
  
      this.values = function() {
          var arr = new Array();
          for (i = 0; i < this.elements.length; i++) {
              arr.push(this.elements[i].value);
          }
          return arr;
      }
  
      this.keys = function() {
          var arr = new Array();
          for (i = 0; i < this.elements.length; i++) {
              arr.push(this.elements[i].key);
          }
          return arr;
      }
  }