// JavaScript Document
var isPost = false;
function validateForm(objForm) {
	if  ( isPost ) {
		alert("You have press the SUBMIT button already");
		return false;
	} else if ( IsEmpty(objForm.firstname.value)) {
		Warning(objForm.firstname , "Please specify First name");
		return false;
	} else if ( IsEmpty(objForm.lastname.value)) {
		Warning(objForm.lastname , "Please specify Last Name");
		return false;
	} else if ( IsEmpty(objForm.address.value)) {
		Warning(objForm.address , "Please specify Address");
		return false;
	} else if ( IsEmpty(objForm.email.value)) {
		Warning(objForm.email ,"Please specify your Email Address");
		return false;
	} else if ( ! IsEmail(objForm.email.value)) {
		Warning(objForm.email ,"Please specify your Email Address in the right format");
		return false;
	} else {
	} else if ( IsEmpty(objForm.password.value)) {
		Warning(objForm.password , "Please specify Verify code");
		return false;
	} else {
		isPost = true;
		objForm.btnSubmit.disabled = true;
		return true;
	}
}