function setStyleById (whichElement, whichStyle, whichValue) {
	var id= document.getElementById(whichElement);
	id.style[whichStyle]= whichValue;
}

function checkFields() {
	if ((document.kontaktformular.name.value == "") || (document.kontaktformular.adresse.value == "") || (document.kontaktformular.plz.value == "") || (document.kontaktformular.ort.value == "") || (document.kontaktformular.land.value == "") || (document.kontaktformular.email.value == "")) {
		if (document.kontaktformular.name.value == "") {
			setStyleById("kontakt_name","color","red");
		} else {
			setStyleById("kontakt_name","color","black");
		}

		if (document.kontaktformular.adresse.value == "") {
			setStyleById("kontakt_adresse","color","red");
		} else {
			setStyleById("kontakt_adresse","color","black");
		}

		if (document.kontaktformular.plz.value == "") {
			setStyleById("kontakt_plz","color","red");
		} else {
			setStyleById("kontakt_plz","color","black");
		}

		if (document.kontaktformular.ort.value == "") {
			setStyleById("kontakt_ort","color","red");
		} else {
			setStyleById("kontakt_ort","color","black");
		}

		if (document.kontaktformular.land.value == "") {
			setStyleById("kontakt_land","color","red");
		} else {
			setStyleById("kontakt_land","color","black");
		}

		if (document.kontaktformular.email.value == "") {
			setStyleById("kontakt_email","color","red");
		} else {
			setStyleById("kontakt_email","color","black");
		}

		setStyleById("requiredfields","color","red");
		return false;
	} else {
		setStyleById("requiredfields","color","black");
		submitcount++;
		return true; 
	}
}