function validlogin(form){
	if(form.username.value.length==0){
		alert('Please enter a username.');
		form.username.focus();
		return false;
	}
	else if(form.password.value.length==0){
		alert('Please enter a password.');
		form.password.focus();
		return false;
	}
	else{
		return true;
	}
}


function validreglogin(form){
	if(form.CustomerNumber.value.length==0){
		alert('Please enter a Customer Number.');
		form.CustomerNumber.focus();
		return false;
	}
	else if(form.InvoiceNum.value.length==0){
		alert('Please enter a Invoice Number.');
		form.InvoiceNum.focus();
		return false;
	}
	else if(form.FName.value.length==0){
		alert('Please enter a First Name.');
		form.FName.focus();
		return false;
	}
	else if(form.LName.value.length==0){
		alert('Please enter a Last Name.');
		form.LName.focus();
		return false;
	}
	else if(form.CompanyName.value.length==0){
		alert('Please enter a Company Name.');
		form.CompanyName.focus();
		return false;
	}
	else if(form.Email.value.length==0){
		alert('Please enter a Email.');
		form.Email.focus();
		return false;
	}
	else if(form.Email.value.length>0){
		if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(form.Email.value)){
			return true;
		}
		else{
    		alert("Invalid E-mail Address! Please re-enter.")
    		form.Email.focus();
			return false;
		}
	}
	else{
		return true;
	}

}