function checkForm(form) {
  if (form.name.value == "") {
    alert('お名前を入力してください。');
    form.name.focus();
    return false;
  }

  if (form.msg.value == "") {
    alert('本文を入力してください。');
    form.msg.focus();
    return false;
  }

  return true;
}

//popup3 <img src="url" onClick="MM_openBrWindow('/map.html','','scrollbars=no,width=510,height=500')" style="cursor:hand">
function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}


// JavaScript Document
function namosw_goto_byselect(sel, targetstr)
{
  var index = sel.selectedIndex;
  if (sel.options[index].value != '') {
     if (targetstr == 'blank') {
       window.open(sel.options[index].value, 'win1');
     } else {
       var frameobj;
       if (targetstr == '') targetstr = 'self';
       if ((frameobj = eval(targetstr)) != null)
         frameobj.location = sel.options[index].value;
     }
  }
}