function clear_search(e,text) {
if( e.value==text) e.value="";
else if( e.value.length==0 ) e.value=text;
}

function popup(url,width,height) 
{
    newwindow=window.open(url,'name','height='+height+',width='+width+',toolbar=no,menubar=no,scrollbars=yes,resizable=no');
    if (window.focus) {newwindow.focus()}
    return false;
}

function validate_form()
{

    if( document.getElementById('email') )
    {
    var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
    var email = document.getElementById('email');
    var email_text = document.getElementById('email_text');
    var error1 = false;
        if(!filter.test(email.value))
        {
            error1 = true;
            email_text.style.color="red";
        }
        else
        {
            error1 = false;
            email_text.style.color="#666666";
        } 
    }

    if( document.getElementById('message') )
    {
    var message = document.getElementById('message');
    var message_text = document.getElementById('message_text');
    var error2 = false;
        if( message.value.length<10 )
        {
            error2 = true;
            message_text.style.color="red";
        }
        else
        {
            error2 = false;
            message_text.style.color="#666666";
        }
    }

    if( !error1 && !error2 ) 
    {
        change_element_type('submit','submit');
    }

}


function change_order_form_action(type,title_bank,title_paypal)
{
    // change form action   
    var form=document.getElementById('payment');
    var button=document.getElementById('a_checkout_button');
    
    switch (type)
    {
        case '2':
            form.action="/payment/paypal/verify.php"; 
            button.title=title_paypal;
            button.innerHTML=title_paypal;
        break;
        default:
            form.action="/payment/bank_transfer/delivery_info/";
            button.title=title_bank;
            button.innerHTML=title_bank;
    }

}

function validate_delivery_info(alert_text)
{

    var payment_banktranfer=document.getElementById('payment_banktranfer');

    if( document.getElementById('payer_email') )
    {
        var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
        var email = document.getElementById('payer_email');
        var email_text = document.getElementById('text_payer_email');
        var error = false;
        if(!filter.test(email.value))
        {
            error = true;
            email_text.style.color="red";
        }
        else
        {
            error = false;
            email_text.style.color="#666666";
        } 
        var error1=error;
    }

    if( document.getElementById('first_name') )
    {
        var field = document.getElementById('first_name');
        var field_text = document.getElementById('text_first_name');
        var error = false;
        if( field.value.length<1 )
        {
            error = true;
            field_text.style.color="red";
        }
        else
        {
            error = false;
            field_text.style.color="#666666";
        }
        var error2=error;
    }

    if( document.getElementById('last_name') )
    {
        var field = document.getElementById('last_name');
        var field_text = document.getElementById('text_last_name');
        var error = false;
        if( field.value.length<1 )
        {
            error = true;
            field_text.style.color="red";
        }
        else
        {
            error = false;
            field_text.style.color="#666666";
        }
        var error3=error;
    }


    if( document.getElementById('address_street') )
    {
        var field = document.getElementById('address_street');
        var field_text = document.getElementById('text_address_street');
        var error = false;
        if( field.value.length<1 )
        {
            error = true;
            field_text.style.color="red";
        }
        else
        {
            error = false;
            field_text.style.color="#666666";
        }
        var error5=error;
    }

    if( document.getElementById('address_city') )
    {
        var field = document.getElementById('address_city');
        var field_text = document.getElementById('text_address_city');
        var error = false;
        if( field.value.length<1 )
        {
            error = true;
            field_text.style.color="red";
        }
        else
        {
            error = false;
            field_text.style.color="#666666";
        }
        var error6=error;
    }

    if( document.getElementById('address_zip') )
    {
        var field = document.getElementById('address_zip');
        var field_text = document.getElementById('text_address_zip');
        var error = false;
        if( field.value.length<1 )
        {
            error = true;
            field_text.style.color="red";
        }
        else
        {
            error = false;
            field_text.style.color="#666666";
        }
        var error7=error;
    }

    if( document.getElementById('address_country') )
    {
        var field = document.getElementById('address_country');
        var field_text = document.getElementById('text_address_country');
        var error = false;
        if( field.value.length<1 )
        {
            error = true;
            field_text.style.color="red";
        }
        else
        {
            error = false;
            field_text.style.color="#666666";
        }
        var error8=error;
    }

    if( !error1 && !error2 && !error3 && !error5 && !error6 && !error7 && !error8 ) 
    {
        payment_banktranfer.submit();
    }
    else alert(alert_text);

}