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

function delete_confirm(url)
{
    var agree=confirm("Are you sure you wish to delete?");
    if (agree) window.location=url;
    else return false ;
}

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 isValidEmailAddress(emailAddress) {
    var pattern = new RegExp(/^([\w-\.]+@([\w-]+\.)+[\w-]{2,4})?$/);
    return pattern.test(emailAddress);
};

function validate_form()
{

    if( document.getElementById('input_email') )
    {   
    var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
    var email = document.getElementById('input_email');
    var email_text = document.getElementById('input_email');
    var error1 = false;
        if(!filter.test(email.value))
        {   
            error1 = true;
            if( email.value.length!=0 ) email_text.style.color="red";
        }   
        else
        {   
            error1 = false;
            email_text.style.color="#6d7073";
        }   
    }   

    if( document.getElementById('textarea-message') )
    {   
    var message = document.getElementById('textarea-message');
    var message_text = document.getElementById('textarea-message');
    var error2 = false;
        if( message.value.length<10 )
        {
            error2 = true;
            if( message.value.length!=0 ) message_text.style.color="red";
        }
        else
        {
            error2 = false;
            message_text.style.color="#6d7073";
        }
    }

    if( !error1 && !error2 ) 
    {
        $('#form_popup').submit();
        //change_element_type('submit','submit');
    }

}


function validate_survey()
{
    var item="#input-name-survey";
    if( $(item) )
    {   
        var error1 = false;
        if( $(item).val().length<3 )
        {
            error1 = true;
            $(item).css("border-color", "red");
            //console.log('here1');
        }
        else
        {
            error1 = false;
            $(item).css("border-color", "rgb(182,182,182)");
            //console.log('here2');
        }
    }

    var item="#input-surname-survey";
    if( $(item) )
    {   
        var error2 = false;
        if( $(item).val().length<3 )
        {
            error2 = true;
            $(item).css("border-color", "red");
        }
        else
        {
            error2 = false;
            $(item).css("border-color", "rgb(182,182,182)");
        }
    }

    var item="#input-school-survey";
    if( $(item) )
    {   
        var error3 = false;
        if( $(item).val().length<2 )
        {
            error3 = true;
            $(item).css("border-color", "red");
        }
        else
        {
            error3 = false;
            $(item).css("border-color", "rgb(182,182,182)");
        }
    }

    var item="#input-email-survey";
    if( $(item) )
    {   
        var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
        var error4 = false;
        if(!filter.test($(item).val()))
        {   
            error4 = true;
            $(item).css("border-color", "red");
        }   
        else
        {   
            error4 = false;
            $(item).css("border-color", "rgb(182,182,182)");
        }   
    }   


    var item="#p-think-school";
    var error5 = false;
    if( !$('input[name=think_school]').is(":checked") )
    {
        error5 = true;
        $(item).css("color", "red");
    }
    else
    {
        error5 = false;
        $(item).css("color", "#505358");
    }

/*
    var item="#p-which-program";
    var error6 = false;
    if( !$('input[name=which_program]').is(":checked") )
    {
        error6 = true;
        $(item).css("color", "red");
    }
    else
    {
        error6 = false;
        $(item).css("color", "#505358");
    }
*/


    //if( !error1 && !error2 && !error3 && !error4 && !error5 && !error6 ) 
    if( !error1 && !error2 && !error3 && !error4 && !error5 ) 
    {
        $('#form_survey').submit();
    }

}



function align_center(element_id)
{

        function getWindowHeight() {
            var windowHeight = 0;
            if (typeof(window.innerHeight) == 'number') {
                windowHeight = window.innerHeight;
            }
            else {
                if (document.documentElement && document.documentElement.clientHeight) {
                    windowHeight = document.documentElement.clientHeight;
                }
                else {
                    if (document.body && document.body.clientHeight) {
                        windowHeight = document.body.clientHeight;
                    }
                }
            }
            return windowHeight;
        }

        function setContent() {
            if (document.getElementById) {
                var windowHeight = getWindowHeight();
                if (windowHeight > 0) {
                    var contentElement = document.getElementById(element_id);
                    var contentHeight = contentElement.offsetHeight;
                    if (windowHeight - contentHeight > 0) {
                        contentElement.style.position = 'relative';
                        contentElement.style.top = ((windowHeight / 2) - (contentHeight / 2)) + 'px';
                    }
                    else {
                        contentElement.style.position = 'static';
                    }
                }
            }
        }

        window.onload = function() {
            setContent();
        }

        window.onresize = function() {
            setContent();
        }

}

function validate_delivery_info(alert_text)
{

    var payment_banktranfer=document.getElementById('form_delivery_details');
    var color_error="red";
    var color_valid="#fff";

    if( document.getElementById('first_name') )
    {   
        var item = document.getElementById('first_name');
        var item_text = document.getElementById('text_first_name');
        var error1 = false;
        if( item.value.length<=0 )
        {   
            error1 = true;
            item_text.style.color=color_error;
        }   
        else
        {   
            error1 = false;
            item_text.style.color=color_valid;
        }   
    }

    if( document.getElementById('last_name') )
    {   
        var item = document.getElementById('last_name');
        var item_text = document.getElementById('text_last_name');
        var error2 = false;
        if( item.value.length<=0 )
        {   
            error2 = true;
            item_text.style.color=color_error;
        }   
        else
        {   
            error2 = false;
            item_text.style.color=color_valid;
        }   
    }

    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 error3 = false;
        if(!filter.test(email.value))
        {
            error3 = true;
            email_text.style.color=color_error;
        }
        else
        {
            error3 = false;
            email_text.style.color=color_valid;
        } 
    }

    if( document.getElementById('address_street') )
    {   
    var item = document.getElementById('address_street');
    var item_text = document.getElementById('text_address_street');
    var error4 = false;
        if( item.value.length<=0 )
        {   
            error4 = true;
            item_text.style.color=color_error;
        }   
        else
        {   
            error4 = false;
            item_text.style.color=color_valid;
        }   
    }

    if( document.getElementById('address_city') )
    {   
    var item = document.getElementById('address_city');
    var item_text = document.getElementById('text_address_city');
    var error5 = false;
        if( item.value.length<=0 )
        {   
            error5 = true;
            item_text.style.color=color_error;
        }   
        else
        {   
            error5 = false;
            item_text.style.color=color_valid;
        }   
    }

    if( document.getElementById('address_postcode') )
    {   
    var item = document.getElementById('address_postcode');
    var item_text = document.getElementById('text_address_postcode');
    var error6 = false;
        if( item.value.length<=0 )
        {   
            error6 = true;
            item_text.style.color=color_error;
        }   
        else
        {   
            error6 = false;
            item_text.style.color=color_valid;
        }   
    }

    if( document.getElementById('address_country') )
    {
        //console.log($( "#address_country" ).val());
        var item = $( "#address_country" ).val();
        var item_text = document.getElementById('text_address_country');
        var error7 = false;
        if( item.length<=0 )
        {   
            error7 = true;
            item_text.style.color=color_error;
        }   
        else
        {   
            error7 = false;
            item_text.style.color=color_valid;
        }   
    }

    if( !error1 && !error2 && !error3 && !error4 && !error5 && !error6 && !error7 ) 
    {
        payment_banktranfer.submit();
    }
    else alert(alert_text);

}