function chkform_contact() {
	if(document.contact.name.value=="") {
		alert("Bitte Name eingeben !");
		document.contact.name.focus();
		return;
	}
	if(document.contact.email.value=="") {
		alert("Bitte E-mail Adresse eingeben !");
		document.contact.email.focus();
		return;
	}
	if(document.contact.email) {
			prw=document.contact.email.value.toLowerCase();
			if(prw!="" ) {
				for (i=0;i<prw.length;++i) {
				  if(  (  ( prw.substr(i,1)==prw.substr(i+1,1) ) &&  ( (prw.substr(i,1)=='-') || (prw.substr(i,1)=='.') || (prw.substr(i,1)=='_')) || (((prw.substr(i,1)=='_')||(prw.substr(i,1)=='.')||(prw.substr(i,1)=='-')||(prw.substr(i,1)=='@') ) && ((prw.substr(i+1,1)=='_')||(prw.substr(i+1,1)=='.')||(prw.substr(i+1,1)=='-')||(prw.substr(i+1,1)=='@') ))   ) || (((prw.substr(i,1)<'a') || (prw.substr(i,1)>'z')) && ((prw.substr(i,1)>'9') || (prw.substr(i,1)<'0')) && (prw.substr(i,1)!='@') && (prw.substr(i,1)!='.') && (prw.substr(i,1)!='-') && (prw.substr(i,1)!='_')) ) {
				    alert("Bitte E-mail Adresse überprüfen!");
						document.formAdmin.email.focus();
						return;
				  };
				}
				if ((prw.length<6) || (((prw.split('.')).length)<=1) || (((prw.split('@')).length)>2) || (((prw.split('@')).length)<=1) || (prw.substr(0,1)=='@')  || (prw.substr(0,1)=='.')  || (prw.substr(0,1)=='_') || ( prw.length-prw.lastIndexOf('.')  < 3 ) || ( prw.length-prw.lastIndexOf('.')  > 5 ) || (prw.lastIndexOf('.')-prw.lastIndexOf('@')<3) || ( prw.substr(prw.lastIndexOf('@'),prw.lastIndexOf('.')).lastIndexOf('_') != -1) || ( prw.substr(prw.lastIndexOf('.'),prw.length).lastIndexOf('-') != -1)  ) {
			  	alert("Bitte E-mail Adresse überprüfen!");
				  document.formAdmin.email.focus();
				  return;
				}
			}
		}
	document.contact.submit();
}