$(function(){
  $('a.sign-out').click(function(e){
    e.preventDefault();
    $.post(this.href, null, function(){
      window.location = '/';
    });
  });
  
  jQuery.validator.addMethod("personnummer", function(value, element) {
    return personnummer(value);
  }, "Ogiltigt personnummer");
});

function personnummer(nr) {
    this.valid=false;
    if(!nr.match(/^(\d{2})(\d{2})(\d{2})\-(\d{4})$/)){ return false; }
    this.now=new Date(); 
    this.nowFullYear=this.now.getFullYear()+""; 
    this.nowCentury=this.nowFullYear.substring(0,2); 
    this.nowShortYear=this.nowFullYear.substring(2,4);
    this.year=RegExp.$1; 
    this.month=RegExp.$2; 
    this.day=RegExp.$3; 
    this.controldigits=RegExp.$4;
    this.fullYear=(this.year*1<=this.nowShortYear*1)?(this.nowCentury+this.year)*1:((this.nowCentury*1-1)+this.year)*1;
    var months = new Array(31,28,31,30,31,30,31,31,30,31,30,31);
    if(this.fullYear%400==0||this.fullYear%4==0&&this.fullYear%100!=0){ months[1]=29; }
    if(this.month*1<1||this.month*1>12||this.day*1<1||this.day*1>months[this.month*1-1]){ return false; }
    this.alldigits=this.year+this.month+this.day+this.controldigits;
    var nn="";
    for(var n=0;n<this.alldigits.length;n++){ nn+=((((n+1)%2)+1)*this.alldigits.substring(n,n+1)); }
    this.checksum=0;
    for(var n=0;n<nn.length;n++){ this.checksum+=nn.substring(n,n+1)*1; }
    this.valid=(this.checksum%10==0)?true:false;
    return (this.valid)
}