function check(formular){
	var text = /^[A-Z]|[a-z]/;
	var emailAdress = /^[a-zA-Z0-9_\.\-]+@([a-zA-Z0-9\-_]|\.)*[a-zA-Z0-9]{2,}\.[a-zA-Z0-9]{2,4}$/;
	var tmp = true;
	var form = formular;
	for (i = 0; i < document.forms[formular].elements.length; ++i){
		if(document.forms[formular].elements[i].name.indexOf('text') == 0){
			if(document.forms[formular].elements[i].value.match(text)){
				document.forms[formular].elements[i].style.border = "1px solid #999";
				document.forms[formular].elements[i].style.backgroundColor = "#ffffff";
			}else{
				document.forms[formular].elements[i].style.border = "1px solid #cc0000";
				document.forms[formular].elements[i].style.backgroundColor = "#fad2d2";
				tmp = false;
				continue;
			}
		}
		if(document.forms[formular].elements[i].name.indexOf('mail') == 0){
			if(document.forms[formular].elements[i].value.match(emailAdress)){
				document.forms[formular].elements[i].style.border = "1px solid #999";
				document.forms[formular].elements[i].style.backgroundColor = "#ffffff";
			}else{
				document.forms[formular].elements[i].style.border = "1px solid #cc0000";
				document.forms[formular].elements[i].style.backgroundColor = "#fad2d2";
				tmp = false;
				continue;
			}
		}
	}
	if(tmp == false){
		document.getElementById('introduction').style.display = "block";
	}else{
		document.getElementById('introduction').style.display = "none";
		document.forms[formular].submit();
	}	
}