function jikan_pic()
{
  var name,mail;
	name = 0;
	mail = 0;
	if(document.F1.c.value == ""){
		document.images["pict_name"].src="error_name.gif";
		name = 1;
	}else{
		document.images["pict_name"].src="ok_name.gif";
	}
	if(document.F1.e.value == ""){
		document.images["pict_mail"].src="error_mail.gif";
		mail = 1;
	}else{
		if(!(document.F1.e.value.match(/[!#-9A-~]+@+[a-z0-9]+.+[!#-9A-~]/i))){
			document.images["pict_mail"].src="error_mail.gif";
			mail = 1;
		}else{
			document.images["pict_mail"].src="ok_mail.gif";
		}
	}
	if((name == 0) && (mail == 0)){
		document.F1.submit();
	}
}
function reset_pic()
{
	document.images["pict_name"].src="ok_name.gif";
	document.images["pict_mail"].src="ok_mail.gif";
	document.F1.reset();
}