function isInteger( str )       /*判断是否为整数*/
{
var regu = /^[-]{0,1}[0-9]{1,}$/;
return regu.test(str);
}


function isDateString(sDate)    /*判断日期是否合法*/
{ 
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
}


function DateDiff(sDate1,sDate2)/*判断两日期相差几天*/
{
var aDate,oDate1,oDate2,iDays ;
aDate =sDate1.split('-'); 
oDate1 = new Date(aDate[1]+'-'+aDate[2]+'-'+aDate[0]) ;
//转换为04-19-2007格式 
aDate = sDate2.split('-'); 
oDate2 = new Date(aDate[1]+'-'+ aDate[2] +'-'+aDate[0]); 
iDays = parseInt(Math.abs(oDate1 -oDate2)/1000/60/60/24);//把相差的毫秒数转换为天数 
return iDays ;
}

function CompareDate(d1,d2)/*判断前日期是否大于后日期*/
{
   return ((new Date(d1.replace(/-/g,"\/"))) > (new Date(d2.replace(/-/g,"\/"))));
}

function checkId(pId)   /*检查身份证号码*/
{  
    var arrVerifyCode = [1,0,"x",9,8,7,6,5,4,3,2];  
    var Wi = [7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2];  
    var Checker = [1,9,8,7,6,5,4,3,2,1,1];  
    if(pId.length != 15 && pId.length != 18)    return false;  
    var Ai=pId.length==18 ?  pId.substring(0,17)   :   pId.slice(0,6)+"19"+pId.slice(6,16);  
    if (!/^\d+$/.test(Ai))  return false;  
    var yyyy=Ai.slice(6,10) ,  mm=Ai.slice(10,12)-1  ,  dd=Ai.slice(12,14);  
    var d=new Date(yyyy,mm,dd) ,  now=new Date();  
     var year=d.getFullYear() ,  mon=d.getMonth() , day=d.getDate();  
    if (year!=yyyy || mon!=mm || day!=dd || d>now || year<1940) return false;  
    for(var i=0,ret=0;i<17;i++)  ret+=Ai.charAt(i)*Wi[i];      
    Ai+=arrVerifyCode[ret %=11];       
    return pId.length ==18 && pId != Ai?false:Ai;          
};