function CheckGroup() {
    DHTMLAreaToTextArea();

    if (document.getElementById('Naam').value == ""){
        alert( "Vul je naam in!" );
        document.getElementById('Naam').focus();
        return false ;
    }   
    
    if (document.getElementById('Straat').value == ""){
        alert( "Vul straat in!");
        document.getElementById('Straat').focus();
        return false ;
    }   
    
    if (document.getElementById('Nummer').value == ""){
        alert( "Vul nummer in!");
        document.getElementById('Nummer').focus();
        return false ;
    }
    
    if (document.getElementById('Stad').value == ""){
        alert( "Vul stad in!");
        document.getElementById('Stad').focus();
        return false ;
    }
    
   if(document.getElementById('Gebruikersnaam')) {
        if (document.getElementById('Gebruikersnaam').value == ""){
            alert( "Vul link naam in!");
            document.getElementById('Gebruikersnaam').focus();
            return false ;
        }
        var l_objRegExp=/^([a-zA-Z0-9_])+$/
        
        if(!l_objRegExp.test(document.getElementById('Gebruikersnaam').value)) {
            alert( "De link naam mag alleen 'a' tot 'z' en '0' tot '9' bevatten\nen moet aan elkaar geschreven zijn!");
            document.getElementById('Gebruikersnaam').focus();
            return false ;
        }
    }
}

function ResetPage() {
    if(document.location.href.indexOf('?Subject') > -1) {
        setTimeout("document.location.href=document.location.href.substring(0,document.location.href.indexOf('?Subject'))", 1500);
    } else {
        setTimeout("document.location.href=document.location", 1500);
    }
}

function SendMessageGoupAdmin(p_intId, p_strSubject) {
    if(p_strSubject) {
        SendRequest('/Ajax/Group/SendMessage.aspx', 'rId=' + p_intId + '&Subject=' + p_strSubject);
    } else {
        SendRequest('/Ajax/Group/SendMessage.aspx', 'rId=' + p_intId);
    }
}

function SendMessage(p_intId) {
    var l_blnError = false;
    
    if(document.getElementById ('MessageEmail')) {
        if(!isEmail(document.getElementById('MessageEmail').value)) {
            alert ('E-mailadres is verplicht!');
            document.getElementById ('MessageEmail').focus();
            l_blnError = true;
        }
    }
    if(document.getElementById ('MessageTitel').value == '') {
        alert ('De titel is verplicht!');
        document.getElementById ('MessageTitel').focus();
        l_blnError = true;
    }
   
    if(!l_blnError) {
        SendRequestFunction('/Ajax/Group/SendMessage.aspx', GetAllValues('FormSendMessage') + '&rId=' + p_intId, ResetPage);
    }
}

function SendMessageUser(p_intId) {
    SendRequest('/Ajax/Group/SendMessageUser.aspx', 'rId=' + p_intId);
}

function SendMessageUserOk(p_intId) {
    var l_blnError = false;
    
    if(document.getElementById ('MessageEmail')) {
        if(!isEmail(document.getElementById('MessageEmail').value)) {
            alert ('E-mailadres is verplicht!');
            document.getElementById ('MessageEmail').focus();
            l_blnError = true;
        }
    }
    if(document.getElementById ('MessageTitel').value == '') {
        alert ('De titel is verplicht!');
        document.getElementById ('MessageTitel').focus();
        l_blnError = true;
    }
   
    if(!l_blnError) {
        SendRequestFunction('/Ajax/Group/SendMessageUser.aspx', GetAllValues('FormSendMessage') + '&rId=' + p_intId, ResetPage);
    }
}

function SendMessageBecomeMember(p_intId) {
    SendRequest('/Ajax/Group/SendMessageBecomeMember.aspx', 'BecomeMember=' + p_intId);
}