function check(form){
var elem,elemname;
elem=new Array(2);
elem[0]="username";
elem[1]="userpw";
elemname=new Array(2);
elemname[0]="ΣΓ»§Γϋ";
elemname[1]="ΓάΒλ";
for (i=0;i<elem.length;i++){
  if (form.elements[elem[i]].value==""){
    alert("ΗλΜξΠ΄"+elemname[i]+"£‘");
    form.elements[elem[i]].focus();
    return false;
  }
}
}