function checkForm(){
				document.getElementById('spanname').innerHTML = "";
				document.getElementById('spanvorname').innerHTML = "";
				document.getElementById('spanstrasse').innerHTML = "";
				document.getElementById('spanplz').innerHTML = "";
				document.getElementById('spanort').innerHTML = "";
				document.getElementById('spantelefon').innerHTML = "";
				document.getElementById('spanemail').innerHTML = "";
				error = false;
					if(document.getElementById('name').value == ""){
						document.getElementById('spanname').innerHTML = "* eingeben";
						error = true;
					}
					if(document.getElementById('vorname').value == ""){
						document.getElementById('spanvorname').innerHTML = "* eingeben";
						error = true;
					}
					if(document.getElementById('strasse').value == ""){
						document.getElementById('spanstrasse').innerHTML = "* eingeben";
						error = true;
					}
					if(document.getElementById('plz').value == ""){
						document.getElementById('spanplz').innerHTML = "* eingeben";
						error = true;
					}
					if(document.getElementById('ort').value == ""){
						document.getElementById('spanort').innerHTML = "* eingeben";
						error = true;
					}
					if(document.getElementById('telefon').value == ""){
						document.getElementById('spantelefon').innerHTML = "* eingeben";
						error = true;
					}
					if ((document.getElementById('email').value.length<5||document.getElementById('email').value.indexOf("@")==-1||document.getElementById('email').value.indexOf(".")==-1)) {
						document.getElementById('spanemail').innerHTML = "*richtig eingeben";
						error = true;
					}
					if ((document.getElementById('email').value =="")) {
						document.getElementById('spanemail').innerHTML = "* eingeben";
						error = true;
					}
					
					if(error != true){document.getElementById('abo_bestellung').submit();}
				}