function resetdutyfields(StrInput) {
                document.getElementById(StrInput).style.background = '#fff';
            }
            
            function setaction(StrForm) {
                document.getElementById(StrForm).action = 'javascript: formcheck()';
            }           
     
            function formcheck() { 
                var valid = true;
                var inputfelder = document.getElementsByTagName('input').length;                
                 
                for (var i = 0; i < inputfelder; i++) {
                    if (window.document.forms[0].elements[i].value=="")
                        {    
                            if (window.document.forms[0].elements[i].className=="duty") {
                                document.forms[0].elements[i].style.background = "#FFECCF";
                                valid = false;
                            }
                        }
                }
                if (valid == true) {
                    if (window.document.forms[0].id == 'anfrage') {
                         window.document.forms[0].action = 'index.php?categories=druckanfrage&rt=1';
                         document.getElementById('abschicken').value = 'Abschicken';
                     }
                    if (window.document.forms[0].id == 'kontakt') {
                         window.document.forms[0].action = 'index.php?categories=contact&rt=1';
                         document.getElementById('abschicken').value = 'Abschicken';
                     }
                 }
                if (valid == false) {
                    document.getElementById('hinweis').style.display = 'block';
                 }                          
            }