//可用于所有联动菜单的实现。
  function CLASS_LIANDONG_YAO(array)
  {
	   //数组，联动的数据源
	  this.array = array; 
	  this.indexName = '';
	  this.obj = '';
	  //设置子SELECT
	  //参数：当前onchange的SELECT ID，要设置的SELECT ID
	  this.subSelectChange=function(selectName1,selectName2){
	  //try
	  //{
			var obj1 = document.all[selectName1];
			var obj2 = document.all[selectName2];
			var objName = this.toString();
			var me = this;
		  
			obj1.onchange=function()
			{    
				me.optionChange(this.options[this.selectedIndex].value,obj2.id);
			}
	  }
	  //设置第一个SELECT
	  //参数：indexName指选中项,selectName指select的ID
	  this.firstSelectChange=function(indexName,selectName)  
	  {
		  this.obj=document.all[selectName];
		  this.indexName=indexName;
		  this.optionChange(this.indexName,this.obj.id);
	   }
	  
	  // indexName指选中项,selectName指select的ID
	  this.optionChange=function (indexName,selectName)
	  {
			var obj1 = document.all[selectName];
			var me = this;	
			obj1.length = 0;
			obj1.options[0] = new Option("请选择",'');
			if (indexName == '0')
				obj1.options[1] = new Option("〖变更为顶级〗",'[ChangeToTop]'); 
			else
				obj1.options[1] = new Option("---------------",''); 				
			for(var i = 0; i < this.array.length; i++)
			{    
				if(this.array[i][1] == indexName)
				{
					//alert(this.array[i][1]+" "+indexName);
					obj1.options[obj1.length]=new Option(this.array[i][2],this.array[i][0]);
				}
			}
	  }  
  }