function markActive(sLanguageLetter) {
	navElements = new Array('index','impressum','bandsaegen','fleischwoelfe','hackfleischlinie','kontakt','ueber_uns','aktuelles','pdf','videos','ansprechpartner');

	navTarget = window.location.href;
	navParsedTarget = navTarget.substring(navTarget	.lastIndexOf('/') + 1,navTarget.lastIndexOf('.'));
	navParsedTargetProducts = navTarget.substring(navTarget	.lastIndexOf('?') + 4);

	for(var j = 0; j < navElements.length; j++) {
		if(navElements[j] == navParsedTarget) {
		
			document.getElementById(navParsedTarget).src = "../images/buttons/navi/" + navParsedTarget + "-hover-" + sLanguageLetter + ".jpg";
		}
	}

	if(navParsedTarget == ".de/" || navParsedTarget == ".org/" || navParsedTarget == ".localhost/") {
			document.getElementById('index').src = "../images/buttons/navi/index-hover-" + sLanguageLetter + ".jpg";
	}
	switch(navParsedTargetProducts) {
		case '1':
		case '2':
		case '3':
		case '4':
		case '5':
		case '6':
		case '7':
		case '8':
		case '9':
		    document.getElementById('bandsaegen').src = "../images/buttons/navi/bandsaegen-hover-" + sLanguageLetter + ".jpg";
			break;
		case '10':
		case '11':
		case '12':
		case '13':
		case '14':
		case '15':
		case '16':
		case '17':
		case '20':
		    document.getElementById('fleischwoelfe').src = "../images/buttons/navi/fleischwoelfe-hover-" + sLanguageLetter + ".jpg";
			break;
		case '18':
		case '19':
		    document.getElementById('hackfleischlinie').src = "../images/buttons/navi/hackfleischlinie-hover-" + sLanguageLetter + ".jpg";
			break;
		default:
		    break;
	}
}