// Skizzen ein- ausblenden
function skizze(typ) {
document.getElementById('skizze_bild').src = './images/skizzen/' + typ + '_g.gif';
document.getElementById('skizze_bild').alt = typ;
document.getElementById('div_skizze').style.visibility = 'visible';
document.getElementById(typ).style.display = 'block';
}
function ausblenden(typ) {
document.getElementById('div_skizze').style.visibility = 'hidden';	
document.getElementById(typ).style.display = 'none';

}


// Newsletter
function checkNewsFormX5(){
	if(document.emailnlformX5.email.value == ""){
		alert("Geben Sie bitte Ihre E-Mail Adresse an!");
		document.emailnlformX5.email.focus();
		return false;
	}
	if(document.emailnlformX5.name.value == ""){
		alert("Geben Sie Ihren Namen bekannt!");
		document.emailnlformX5.name.focus();
		return false;
		}
	if (EMailVErifyX5(document.emailnlformX5.email.value)) {
		document.emailnlformX5.submit();
		}
	else  	{
		alert("Bitte geben Sie eine gültige E-Mail Adresse an!");
		}
		}
function checkEmailX5(){
	if(document.emailnlformX5.email.value == ""){
		document.emailnlformX5.email.value = "E-Mail Adresse";
		}
	}  
	
function EMailVErifyX5(s)  {
	var a = false;
	var res = false;
	if(typeof(RegExp) == "function")  	 {
		var b = new RegExp("abc");
		if(b.test("abc") == true) { a = true; }
	}
	if(a == true)  	 { 
		reg = new RegExp("^([a-zA-Z0-9\-\.\_]+)"+"(\@)([a-zA-Z0-9\-\.]+)"+"(\.)([a-zA-Z]{2,4})$");
		res = (reg.test(s));  	 }
	else  	 {
		res = (s.search("@") >= 1 && s.lastIndexOf(".") > s.search("@") && s.lastIndexOf(".") >= s.length-5)
		}
	return(res);
	}