function sending(){

	document.getElementById("wait").style.display = "block";
	document.getElementById("submitInteractive").disabled = true;

}

function notsending(){

	document.getElementById("wait").style.display = "none";
	document.getElementById("submitInteractive").disabled = false;

}

function submitbutton(pressbutton) {
	var form = document.interactiveForm;
	var fields = "";
	var error = false;
	var mailCheck = new RegExp('^([a-zA-Z0-9\\-\\.\\_]+)(\\@)([a-zA-Z0-9\\-\\.]+)(\\.)([a-zA-Z]{2,4})$');
	if (pressbutton == 'submit') {

		if (form.name.value == "") {
			fields = fields + "\n - Vorname, Name";
			error = true;
		}
		if (form.street.value == "") {
			fields = fields + "\n - Straße, Nr";
			error = true;
		} 
		if (form.city.value == "") {
			fields = fields + "\n - PLZ, Ort";
			error = true;
		} 
		if (form.work.value == "") {
			fields = fields + "\n - Beruf";
			error = true;
		} 
		/*
		if (!mailCheck.test(form.mail.value)) {
			fields = fields + "\n - E-Mail";
			error = true;
		} 
		*/
		
		if (error) {
			alert("Bitte füllen Sie noch folgende Felder aus:\n" + fields);
			notsending();
		} else {
			form.submit();
		}
	}
}