function input_check_contact()
{
    var first_name = document.form_contact.first_name.value;
    var phone = document.form_contact.phone.value;
    var mail = document.form_contact.mail.value;
    var address = document.form_contact.address.value;
    var city = document.form_contact.city.value;
    var post_code = document.form_contact.post_code.value;
    var message_custom = document.form_contact.message_custom.value;
    
    
    if(first_name=="")
    {
    	alert("First name should not empty !");
        return false;
    } 
    
    if(phone=="")
    {
    	alert("Phone should not empty !");
        return false;
    } 
    
    if(mail=="")
    {
    	alert("Email should not empty !");
        return false;
    } 
    
    if(address=="")
    {
    	alert("Address should not empty !");
        return false;
    } 
    
    if(city=="")
    {
    	alert("City should not empty !");
        return false;
    } 
    
    if(post_code=="")
    {
    	alert("Zip Code should not empty !");
        return false;
    } 
    
    if(message_custom=="")
    {
    	alert("Message should not empty !");
        return false;
    } 
    
    else
    {
        return true;
    }
}



function input_check_signup()
{
    var username = document.form_contact.username.value;
    var passwd = document.form_contact.passwd.value;
    var re_password = document.form_contact.re_password.value;
    var realname = document.form_contact.realname.value;
    var phone = document.form_contact.phone.value;
    var email = document.form_contact.email.value;
    var address = document.form_contact.address.value;
    var city = document.form_contact.city.value;
    var post_code = document.form_contact.post_code.value;
    
    
    
    if(username=="")
    {
    	alert("Login Name should not empty !");
        return false;
    } 
    
    else if(passwd=="")
    {
    	alert("Password should not empty !");
        return false;
    } 
    
    else if(re_password=="")
    {
    	alert("Retype Password should not empty !");
        return false;
    } 
    
    else if(passwd!=re_password)
    {
    	alert("Password and Retype Password doesn't match !");
        return false;
    } 
    
    else if(realname=="")
    {
    	alert("Name should not empty !");
        return false;
    } 
    
    else if(phone=="")
    {
    	alert("Phone should not empty !");
        return false;
    } 
    
    else if(email=="")
    {
    	alert("Email should not empty !");
        return false;
    } 
    
    else if(address=="")
    {
    	alert("Address should not empty !");
        return false;
    } 
    
    else if(city=="")
    {
    	alert("City should not empty !");
        return false;
    } 
    
    else if(post_code=="")
    {
    	alert("Zip Code should not empty !");
        return false;
    } 
    
    
    else
    {
        return true;
    }
}


function input_check_login()
{
    var username = document.form_contact.username.value;
    var passwd = document.form_contact.passwd.value;
    
    if(username=="")
    {
    	alert("Username should not empty !");
        return false;
    } 
    
    else if(passwd=="")
    {
    	alert("Password should not empty !");
        return false;
    } 
    
    else
    {
        return true;
    }
}