function startCalc(){
	    interval = setInterval("calc()",1);
    }
    function calc(){
	    one = parseInt(document.getElementById('eod').value);
	    two = parseInt(document.getElementById('d05').value);
	    three = parseInt(document.getElementById('tsS').value);
	    four = parseInt(document.getElementById('tsM').value);
	    five = parseInt(document.getElementById('tsL').value);
	    six = parseInt(document.getElementById('tsXL').value);
	    if(document.getElementById('check1').checked)
		    seven= parseInt(document.getElementById('check1').value);
	    if(document.getElementById('check2').checked)
		    seven= parseInt(document.getElementById('check2').value);
	    if(document.getElementById('check3').checked)
		    seven= parseInt(document.getElementById('check3').value);
	    document.getElementById('sumfield').value = ((8*one)+(5*two)+(12*three)+(12*four)+(12*five)+(12*six)+seven);
    }
    function stopCalc(){
	    clearInterval(interval);
    }
    function EingabenUeberpruefen(){
	    var Fehlermeldung = "";

	    if(document.getElementById('shopform').Name.value == "")
		    {
			Fehlermeldung += "Please enter your name!\n";
		    }

	    if(document.getElementById('shopform').Nachname.value == "")
		    {
			Fehlermeldung += "Please enter your surname!\n";
		    }
    
	    if(document.getElementById('shopform').Strasse.value == "")
		    {
			Fehlermeldung += "Please enter your street!\n";
		    }

	    if(document.getElementById('shopform').PLZ.value == "")
		    {
			    Fehlermeldung += "Please enter your zipcode!\n";
		    }

	    if(document.getElementById('shopform').Ort.value == "")
		    {
			    Fehlermeldung += "Please enter your city!\n";
		    }

	    if(document.getElementById('shopform').email.value == "")
		    {
			    Fehlermeldung += "Please enter your email!\n";
		    }
   
	    if(Fehlermeldung)
	    	{
			alert(Fehlermeldung);

			return false;
		}
	    else
	    	{
			return true;
		}
    	}