function quelle() {

var st = '<meta name="title" content="' + document.getElementById('st').value + '">\n';
var au = '<meta name="author" content="' + document.getElementById('au').value + '">\n';
var hg = '<meta name="publisher" content="' + document.getElementById('hg').value + '">\n';
var co = '<meta name="copyright" content="' + document.getElementById('co').value + '">\n';
var ge = '<meta name="generator" content="' + document.getElementById('ge').value + '">\n';
var be = '<meta name="description" content="' + document.getElementById('be').value + '">\n';
var sp = '<meta http-equiv="content-language" content="' + document.getElementById('sp').value + '">\n';
var ze = '<meta http-equiv="content-type" content="text/html; charset=' + document.getElementById('ze').value + '">\n';
var pa = '<meta name="date" content="' + document.getElementById('pa').value + '">\n';
var aa = '<meta name="expires" content="' + document.getElementById('aa').value + '">\n';
var sw = '<meta name="keywords" lang="' + document.getElementById('sp3').value + '" content="' + document.getElementById('sw').value + '">\n'
var ro = '<meta name="robots" content="' + document.getElementById('ro').value + ', ' + document.getElementById('li').value + '">\n'
var ta = '<meta name="revisit-after" content="' + document.getElementById('ta').value + ' days"> <meta name="revisit" content="after ' + document.getElementById('ta').value + ' days">'

	if (document.getElementById('st').value == '') {
		var st = '';
	}

	if (document.getElementById('au').value == '') {
		var au = '';
	}

	if (document.getElementById('hg').value == '') {
		var hg = '';
	}

	if (document.getElementById('co').value == '') {
		var co = '';
	}

	if (document.getElementById('ge').value == '') {
		var ge = '';
	}

	if (document.getElementById('be').value == '') {
		var be = '';
	}

	if (document.getElementById('sp').value == '') {
		var sp = '';
	}

	if (document.getElementById('ze').value == '') {
		var ze = '';
	}

	if (document.getElementById('pa').value == '') {
		var pa = '';
	}

	if (document.getElementById('aa').value == '') {
		var aa = '';
	}

	if (document.getElementById('sw').value == '') {
		var sw = '';
	}

	if (document.getElementById('ro').value == '') {
		var ro = '';
	}

	if (document.getElementById('ta').value == '') {
		var ta = '';
	}

document.getElementById('meta').value =  st  + au + hg + co + ge + be + sp + ze + pa + aa + sw + ro + ta + '<!-- Die Meta-Angaben dieser Website wurden mithilfe des Meta-Tag-Generators von http://www.weedit.de/online-tools/seo/meta-tag-generator/ erstellt -->';
}

function datum() {
var datum = new Date();
var tag = datum.getDate();
var monat = datum.getMonth() + 1;
var jahr = datum.getFullYear();
document.getElementById('pa').value = tag + '-' + monat + '-' + jahr;
}