function isValidEmail(email) {
		var emailRegExp = /^\w(?:\w|-|\.(?!\.|@))*@\w(?:\w|-|\.(?!\.))*\.\w{2,4}/ 
		var result = email.match(emailRegExp);
		if ((result && result[0].length != email.length) || !result) {
			return false
		} else {
			return true
		}
	}
	
function chkLogin() {
	var errArr = new Array();
	with (document.loginForm) {
		if (!loginEmail.value.length || !isValidEmail(loginEmail.value)) {
			errArr[errArr.length] = "Your Email";
		}
		if (!loginPassword.value.length) {
			errArr[errArr.length] = "Your Password";
		}
	}
	if (errArr.length) {
		alert('Please complete the following:\n\n- '+errArr.join('\n- '));
		return false
	} else {
		return true
	}
}