function checkForm(form){
	if (form.customerID.value == "") {
		alert("User Field can't be blank! Please enter valid User");
		form.customerID.value='';
		form.customerID.focus();
		return false;
	}
	if (form.password.value==""){
		alert("Password Field can't be blank! Please enter valid Password");
		form.password.value='';
		form.password.focus();
		return false;
	}
	return true;
}