// JavaScript Document

function check_form(){
	if (document.contact.name.value == ''){
		document.contact.name.select();
		document.contact.name.focus();
		document.contact.name.style.border='1px solid #ff0000';
		alert('Bitte geben Sie Ihren Namen an.');
		return false;
	}
	else { document.contact.name.style.border='1px solid #d1d1d1'; }
	
	var x=0;
	if (document.contact.email.value != ''){
		if (document.contact.email.value.indexOf ('@',0) == -1 || document.contact.email.value.indexOf ('.',0) == -1){
			x++;
			document.contact.email.select();
			document.contact.email.focus();
			document.contact.email.style.border='1px solid #ff0000';
		}
		else { document.contact.email.style.border='1px solid #d1d1d1'; }
	}
	else {
		x++;
		document.contact.email.select();
		document.contact.email.focus();
		document.contact.email.style.border='1px solid #ff0000';
	}
	
	if (document.contact.tel.value != '' && document.contact.tel.value.length >= 5){
		var _123 = document.contact.tel.value;
		for (var i=0; i < _123.length; i++){
			var abc = _123.substring(i, i + 1);
			if ((abc < "0" || "9" < abc) && abc != '.'){
				x++;
				document.contact.tel.select();
				document.contact.tel.focus();
				document.contact.tel.style.border='1px solid #ff0000';
				break;
			}
			else { document.contact.tel.style.border='1px solid #d1d1d1'; }
		}
	}
	else {
		x++;
		document.contact.tel.select();
		document.contact.tel.focus();
		document.contact.tel.style.border='1px solid #ff0000';
	}
	if (x==2){
		alert('Bitte geben Sie eine gueltige Email-Adresse oder Telefonnummer an.');
		return false;
	}
	else {
		document.contact.tel.style.border='1px solid #d1d1d1';
		document.contact.email.style.border='1px solid #d1d1d1';
	}
	if (document.contact.content.value == ''){
		document.contact.content.select();
		document.contact.content.focus();
		document.contact.content.style.border='1px solid #ff0000';
		alert('Bitte geben Sie eine Nachricht ein.');
		return false;
	}
	else { document.contact.content.style.border='1px solid #d1d1d1'; }
	document.contact.submit();
}