function goSet(obj){
		var form	= document.researchForm;
		var	sel_cnt = obj.value.substring(0,1);		// selectable answer count    //
		var	obj_yn	= obj.value.substring(1,2);		// question type distinction  //
		var ans_num = obj.value.substring(2,4);		// answer no                  //
		var ans_con;								// answer content             //
		
		var	check	= form.ans_num;			
		var ch_cnt	= 0;
		
		if(obj.type == 'checkbox')
			for (var i=0;i < check.length ; i++)
				if (check[i].checked) ch_cnt = ch_cnt + 1;

		if(ch_cnt > sel_cnt){
			alert(" 回答最多可选择 " + sel_cnt + "个。");
			obj.checked = false;
			return;
		}

		if(obj_yn == '0')
			ans_con = form.ans_con.value;
		else
			ans_con = obj.value.substring(4);
	}