var menu_in = false;

function sub_menu(id)
{

	if(document.getElementById('content_'+id).style.display == 'none')
	{
	document.getElementById('content_'+id).style.display = 'block';
	document.getElementById('btn_'+id).style.backgroundImage = "url('imgs/page_close_btn.png')";
	}
	else
	{
	document.getElementById('content_'+id).style.display = 'none';
	document.getElementById('btn_'+id).style.backgroundImage = "url('imgs/page_open_btn.png')";
	}

}


/*
function programs_menu()
{
	if(document.getElementById('programs_sub_menu').style.display == 'none')
	{
	document.getElementById('programs_sub_menu').style.display = 'block';
	}
	else
	{
	document.getElementById('programs_sub_menu').style.display = 'none';
	}
}
*/

function check_programs_menu()
{
	if(menu_in == true)
	document.getElementById('programs_sub_menu').style.display = 'block';
	else
	document.getElementById('programs_sub_menu').style.display = 'none';
}

function initMenu()
{
setInterval("check_programs_menu()", 500);
}




function subscribe()
{
var mail = document.getElementById('mail').value;
var zip = document.getElementById('zip').value;

	if(!checkEmail(mail))
	{
	alert(msg_err_mail);
	return;
	}
	else if(zip == "")
	{
	alert(msg_err_zip);
	return;
	}


document.getElementById('subscript_form').submit();
}


function clearInput(id, text)
{
if(document.getElementById(id).value == text)
document.getElementById(id).value = "";

}



function checkEmail(email) {
    if(email.indexOf("@") == -1 || email.indexOf(".") == -1) { 
	return false;
    } else {
        var first = email.split("@");
        var user = first[0];
        var second = first[1].split(".");
        var domain = second[0];
        var ending = second[1];
        if(user.length < 2 || domain.length < 2 || ending.length < 2) {
            return false;
        } else {
            return true;
        }
    }
}