function $(id) {
    return document.getElementById(id);
}

function go(id) {
    return document.getElementById(id);
}

function showUserMenu(divId) {
var div = $(divId);
	if (div.style.display == 'block')
		div.style.display = 'none';
	else
		div.style.display = 'block';
}

function loginSystem(obj) {
	if (obj.loginName.value == "") {
		alert("请输入用户名！");
		obj.loginName.focus();
		return false;
	}
	if (obj.password.value == "") {
		alert("请输入密码！");
		obj.password.focus();
		return false;
	}
	obj.submit();
	return true;
}

function toNumeric(aNum) {
var result = aNum * 1;
	if (!(result>=0))
		result = 0;
	return result;
}

function strToDate(aDate, aSplit){
var year, month, day;
var ary = new Array(3);
var strSplit = "-";

	if (aDate!='') {
		if (aDate.length>8) {
			if (aSplit!=null) {
				strSplit = aSplit;
			}
			ary = aDate.split(strSplit);
			year = ary[0];
			month = ary[1] - 1;
			day = ary[2];
		}
		else {
			year = aDate.substr(0,4) * 1;
			month = aDate.substr(4,2) * 1 - 1;
			day = aDate.substr(6,2) * 1;
		}
	}
	return (new Date(year,month,day));
}

function isDateString(sDate){
	var iaMonthDays = [31,28,31,30,31,30,31,31,30,31,30,31]
	var iaDate = new Array(3)
	var year, month, day

	if (arguments.length != 1) return false;
	iaDate = sDate.toString().split("-")
	if (iaDate.length != 3) return false;
	if (iaDate[1].length > 2 || iaDate[2].length > 2) return false;

	year = parseFloat(iaDate[0])
	month = parseFloat(iaDate[1])
	day=parseFloat(iaDate[2])

	if (year < 1900 || year > 2100) return false
	if (((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0)) iaMonthDays[1]=29;
	if (month < 1 || month > 12) return false
	if (day < 1 || day > iaMonthDays[month - 1]) return false;
	return true;
}
//左右按钮滑动(效果plane15/mode12)
function fanye(isleft,id){
	var showwidth=264;
	var objul = document.getElementById(id).getElementsByTagName('ul')[0];
	var nowmarginleft = objul.style.marginLeft ;
	if(nowmarginleft.indexOf("p")>0)
		nowmarginleft = parseInt( nowmarginleft.substring(0,nowmarginleft.indexOf("p")));
	else
		nowmarginleft = 0;
	
 	var ullength=document.getElementById(id).getElementsByTagName("li")[0].scrollWidth * document.getElementById(id).getElementsByTagName("li").length;
	var aaa=111;
	if(isleft)
	{
		if(nowmarginleft+aaa>0)
			objul.style.marginLeft = "0px";
		else
			objul.style.marginLeft = nowmarginleft + aaa +"px";
	}
	else
	{
		if(ullength + nowmarginleft - showwidth > aaa)
			objul.style.marginLeft =  nowmarginleft - aaa + "px";
		else
			objul.style.marginLeft= nowmarginleft - (ullength + nowmarginleft - showwidth) +"px";
	}
}
//下拉显示(效果plane15/mode12)
function dropShow(evt){
	var e=(evt)?evt:window.event;  
	if(window.event) 
		e.cancelBubble=true;  
	else
		e.stopPropagation();  
	document.getElementById("travelrecommend").className="viewmore citydrop isclick";
	document.getElementById("traveline").style.display="block";	
	document.getElementById("traveline").style.cssText="right:10px; top:28px;";
	var as=document.getElementById("traveline").getElementsByTagName("a");
	for(var i = 0; i<as.length;i++)
		as[i].onclick=function(){document.getElementById("travelcity").innerHTML = this.innerHTML;};
	
}
//下拉隐藏(效果plane15/mode12)
function dropHidden(){
    if(document.getElementById("travelrecommend")!=null)    
	document.getElementById("travelrecommend").className="viewmore citydrop";
	if(document.getElementById("traveline")!=null)
	document.getElementById("traveline").style.display="none";
}