/*  
**    ======================================================================
**    类名：CLASS_LIANDONG  
**    功能：多级连动菜单  
**    
**    作者：YAODAYIZI  
**    ======================================================================
**/ 
function CLASS_LIANDONG(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){
		var obj1 = document.all[selectName1];
		var obj2 = document.all[selectName2];
		var objName = this.toString();
		var me = this;
		obj1.onclick = 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","");
		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]);
			}
		}
	}
}