function check_login() 
{ 
	if (document.login.email.value == "") 
	{ 
		alert('Check User ID'); 
		document.login.email.focus(); 
		return false; 
	} 
	if (document.login.password.value == "") 
	{ 
		alert('Check Password'); 
		document.login.password.focus(); 
		return false; 
	} 
}

function check_reg() 
{ 
	if (document.reg.Reg_Email.value == "") 
	{ 
		alert('Check E-mail Address'); 
		document.reg.Reg_Email.focus(); 
		return false; 
	} 
	if (document.reg.Reg_Email.value.length > 0 && !document.reg.Reg_Email.value.match( /^.+@.+$/ ) ) {
	    alert("check your Email");
		document.reg.Reg_Email.focus();
		return false;
	}
	if (document.reg.Reg_Password.value == "") 
	{ 
		alert('Check Password'); 
		document.reg.Reg_Password.focus(); 
		return false; 
	}
	if (document.reg.Reg_RePassword.value != document.reg.Reg_Password.value) 
	{ 
		alert('Check Reg_RePassword'); 
		document.reg.Reg_RePassword.focus(); 
		return false; 
	}
	if (document.reg.Reg_Name.value == "") 
	{ 
		alert('Check Name'); 
		document.reg.Reg_Name.focus(); 
		return false; 
	}
	if (document.reg.Reg_Address.value == "") 
	{ 
		alert('Check Address'); 
		document.reg.Reg_Address.focus(); 
		return false; 
	}
	if (document.reg.Reg_Zip.value == "") 
	{ 
		alert('Check Zip Code'); 
		document.reg.Reg_Zip.focus(); 
		return false; 
	}
	if (document.reg.Reg_Country.value == "") 
	{ 
		alert('Check Country'); 
		document.reg.Reg_Country.focus(); 
		return false; 
	}
}