// JavaScript Document

function validateEmail(email_id,error){

	email_error = email_id + "_error";
	document.getElementById(email_error).style.display = "none";
	
	emailvalue = document.getElementById(email_id).value;
	at = emailvalue.indexOf('@');
	dot = emailvalue.indexOf('.');
	
	if (emailvalue == ""){
		document.getElementById(email_error).style.display = "block";
		document.getElementById(email_id).select();
		document.getElementById(email_id).focus();
		error = 1;
	}
	
	if (at<1 || at==(emailvalue.length-1)){
		document.getElementById(email_error).style.display = "block";
		document.getElementById(email_id).select();
		document.getElementById(email_id).focus();
		error = 1;
	}
	if (dot<1 || dot==(emailvalue.length-1)){
		document.getElementById(email_error).style.display = "block";
		document.getElementById(email_id).select();
		document.getElementById(email_id).focus();
		error = 1;
	}
	return error;
}

function validateString(string_id,error){
	string_error = string_id + "_error";
	document.getElementById(string_error).style.display = "none";
	
	stringvalue = document.getElementById(string_id).value;
	if (stringvalue == ""){
		document.getElementById(string_error).style.display = "block";
		document.getElementById(string_id).select();
		document.getElementById(string_id).focus();
		error = 1;
	}
	return error;
}

function validateNumber(number_id,error){
	number_error = number_id + "_error";
	document.getElementById(number_error).style.display = "none";
	
	numbervalue = document.getElementById(number_id).value;
	if (numbervalue == ""){
		document.getElementById(number_error).style.display = "block";
		document.getElementById(number_id).select();
		document.getElementById(number_id).focus();
		error = 1;
	}
	if(isNaN(numbervalue)){
		document.getElementById(number_error).style.display = "block";
		document.getElementById(number_id).select();
		document.getElementById(number_id).focus();
		error = 1;
	}
	return error;
}