var req;
function getRequest() {	
	req = getXMLHttpRequestFromIE();	
	if (req == null) {
		req = new XMLHttpRequest();
	}	
}

function getXMLHttpRequestFromIE() {
	var namePrefixes = [ "Msxml3", "Msxml2", "Msxml", "Microsoft" ];
	for ( var i = 0; i < namePrefixes.length; i++) {
		try {
			var name = namePrefixes[i] + ".XMLHTTP";
			return new ActiveXObject(name);
		} catch (e) {
		}
	}
	return null;
}

/*
   url : 请求的地址
   param : 传输的参数，格式为：参数名称1=参数值1&参数名称2=参数值2
   processFunc ：处理函数
*/
function sendPostRequest(url,param,processFunc){	
    getRequest();   
    if (req) {
        req.onreadystatechange = processFunc;
        req.open("post", url, true);
        req.setRequestHeader("Content-Type","application/x-www-form-urlencoded;");
        req.send(param);
    }
}

//提示信息
function init(message){
	if(message!='')
	alert(message);
}

//全选/全取消【上边的】
function selectAllOne() {
	if ($(":checkbox[name='checkAllTop']").attr("checked")) {
		$(":checkbox[name='checkOne']").each(function () {
			$(this).attr("checked", true);
		});
	}
	if (!$(":checkbox[name='checkAllTop']").attr("checked")) {
		$(":checkbox[name='checkOne']").each(function () {
			$(this).attr("checked", false);
		});
	}
}

//全选/全取消【下边的】
function selectAllTwo() {
	if ($(":checkbox[name='checkAllButtom']").attr("checked")) {
		$(":checkbox[name='checkOne']").each(function () {
			$(this).attr("checked", true);
		});
	}
	if (!$(":checkbox[name='checkAllButtom']").attr("checked")) {
		$(":checkbox[name='checkOne']").each(function () {
			$(this).attr("checked", false);
		});
	}
}


/**
 * 格式化浮点数
 * @param {} number
 * @param {} fractionDigits
 * @return {}
 */
function formatNumber(number,fractionDigits){  
	return (Math.round(number*Math.pow(10,fractionDigits)) / Math.pow(10,fractionDigits)).toFixed(fractionDigits);  
}

//菜单级联 
var flag="";
function addNewsType(id,f){
     if(id==""){
          return false;
     } 
    flag = f;
    if(f=='one'){
    	 $("#lwpqtwo").css('display','none'); 
     	 $("#lwpqone").css('display','none'); 
    }
    if(f=='two'){
    	 $("#lwpqtwo").css('display','none'); 
    }    
	var url = "getMenuNewsInfo.html";
	var query_string = "id="+id;	
	sendPostRequest(url, query_string, getOperResponse);
} 
function getOperResponse(){
	if (req.readyState == 4 && req.status == 200){		
	    var options = req.responseXML.getElementsByTagName("option");
        var operations ="";
        if(flag=="one"&&options.length>0){
              operations =document.getElementById("selectone");		
              $("#lwpqone").css('display','');
        }
        if(flag=="two"&&options.length>0){
               operations =document.getElementById("selecttwo");
               $("#lwpqtwo").css('display','');
        }
		operations.length=0;
		var option=null;  
		for(var i=0;i<options.length;i++){			
	        option=document.createElement("option");   
	        option.appendChild(document.createTextNode(options[i].firstChild.nodeValue)); 
	        option.setAttribute("value", options[i].getAttribute("value"));
	        operations.appendChild(option);   
	    }   
	}
}