/*function chkinp(form){	
	if (form.firstname.value==""){
	alert("Sorry, Please fill your Firstame")
	form.firstname.focus();
	return false;
	}else if (form.surname.value==""){
	alert("Sorry, Please fill your Surame")
	form.surname.focus();
	return false;
	}else if (form.email.value==""||form.email.value.indexOf('@')<0){
	alert("Sorry, Please fill your Email Address")
	form.email.focus();
	return false;
	}
	
}*/
var isPost = false;
function chkinp(objForm) {
	if  ( isPost ) {
		alert("You have press the SUBMIT button already");
		return false;
	} else if ( IsEmpty(objForm.firstname.value)) {
		Warning(objForm.firstname , "Please specify your First Name");
		return false;
	} else if ( IsEmpty(objForm.surname.value)) {
		Warning(objForm.surname , "Please specify your Surname");
		return false;
	} else if ( IsEmpty(objForm.email.value)) {
		Warning(objForm.email ,"Please specify your E-mail");
		return false;
	} else if ( ! IsEmail(objForm.email.value)) {
		Warning(objForm.email ,"Please specify your E-mail in the right format");
		return false;
	} else if ( IsEmpty(objForm.password.value)) {
		Warning(objForm.password , "Please specify your Verify code");
		return false;
	} else {
		isPost = true;
		objForm.btnSubmit.disabled = true;
		return true;
	}
}