text: /**********************************
  *****	通用js集
  *****   陈鹏昊
  *****   2014/7/19
  ***********************************/
  function Map() {
  	var struct = function(key, value) {
  		this.key = key;
  		this.value = value;
  	}
   
  	var put = function(key, value){
  		for (var i = 0; i < this.arr.length; i++) {
  			if ( this.arr[i].key === key ) {
  				this.arr[i].value = value;
  				return;
  			}
  		}
  		this.arr[this.arr.length] = new struct(key, value);
  	}
   
  	var get = function(key) {
  		for (var i = 0; i < this.arr.length; i++) {
  			if ( this.arr[i].key === key ) {
  				return this.arr[i].value;
     			}
    		}
    		return null;
   	}
   
  	var remove = function(key) {
  	var v;
  		for (var i = 0; i < this.arr.length; i++) {
  			v = this.arr.pop();
  			if ( v.key === key ) {
  				continue;
  			}
  			this.arr.unshift(v);
  		}
  	}
   
  	var size = function() {
  		return this.arr.length;
  	}
   
  	var isEmpty = function() {
  		return this.arr.length <= 0;
  	}
   	this.arr = new Array();
  	this.get = get;
   	this.put = put;
   	this.remove = remove;
   	this.size = size;
   	this.isEmpty = isEmpty;
  }