function myEnter(myPassWord){
  myPassWord=prompt("パスワードを入力してください","");
  if ( myPassWord == "yasu" ) 
  
  myPassWord =window.open("http://www.13tonmin.com/m8864.htm","newwin","toolbar=yes,location=no,directories=no,status=no,scrollbars=yes,resizable=yes,width=800,height=700");

  
  else
  alert( "パスワードが違います!" );
}