sfHover = function() {
	var sfEls = document.getElementById("nav").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" sfhover";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
	}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);

function hide(element) {
  document.getElementById(element).style.visibility = "hidden";
}
function show(element) {
  document.getElementById(element).style.visibility = "visible";
}



function schrift12(element) {
	document.getElementById(element).style.fontSize = "12px";
	if(document.getElementsByTagName('h1').length) {
		for (var h = 0; h < document.getElementsByTagName("h1").length; h++) {
			document.getElementsByTagName("h1")[h].style.fontSize = "18px";
	   }
	}
	if(document.getElementsByTagName('h2').length) {
		for (var h = 0; h < document.getElementsByTagName("h1").length; h++) {
			document.getElementsByTagName("h1")[h].style.fontSize = "16px";
	   }
	}	
}

function schrift14(element) {
	document.getElementById(element).style.fontSize = "14px";
	if(document.getElementsByTagName('h1').length) {
		for (var h = 0; h < document.getElementsByTagName("h1").length; h++) {
			document.getElementsByTagName("h1")[h].style.fontSize = "20px";
	   }
	}
	if(document.getElementsByTagName('h2').length) {
		for (var h = 0; h < document.getElementsByTagName("h1").length; h++) {
			document.getElementsByTagName("h1")[h].style.fontSize = "18px";
	   }
	}	
}

function schrift16(element) {
	document.getElementById(element).style.fontSize = "16px";
	if(document.getElementsByTagName('h1').length) {
		for (var h = 0; h < document.getElementsByTagName("h1").length; h++) {
			document.getElementsByTagName("h1")[h].style.fontSize = "22px";
	   }
	}
	if(document.getElementsByTagName('h2').length) {
		for (var h = 0; h < document.getElementsByTagName("h1").length; h++) {
			document.getElementsByTagName("h1")[h].style.fontSize = "20px";
	   }
	}	
}