// JavaScript Document
var isPost = false;
function validateForm(objForm) {
	if  ( isPost ) {
		alert("You have press the SUBMIT button already");
		return false;
	} else if ( IsEmpty(objForm.lname.value)) {
		Warning(objForm.lname , "Please specify your Last Name");
		return false;
	} else if ( IsEmpty(objForm.fname.value)) {
		Warning(objForm.fname , "Please specify your First Name");
		return false;
	} else if ( IsEmpty(objForm.email.value)) {
		Warning(objForm.email ,"Please specify your E-mail Address");
		return false;
	} else if ( ! IsEmail(objForm.email.value)) {
		Warning(objForm.email ,"Please specify your E-mail Address in the right format");
		return false;
	} else if ( objForm.depdate.value=="Click calendar") {
		Warning(objForm.depdate , "Please select Departure Date");
		return false;
	}  else if ( objForm.retdate.value=="Click calendar") {
		Warning(objForm.retdate , "Please select Return Date");
		return false;
	} else if ( IsEmpty(objForm.password.value)) {
		Warning(objForm.password , "Please specify your letters from the image");
		return false;
	} else {
		isPost = true;
		objForm.btnSubmit.disabled = true;
		return true;
	}
}