function CheckInput () {
  for (i = 0; i < document.forms[0].elements.length; ++i)
    if (document.forms[0].elements[i].value == "") {
      alert("Please insert search word!");
      document.forms[0].elements[i].focus();
      return false;
    }
  return true;
}

function checkMail1()
{
	var x = document.forms[0].txtemail.value;
	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if (filter.test(x)) submit;
	else alert('Incorrect email address');
         return false;
}


function textCounter(field, countfield, maxlimit) {
	if (field.value.length > maxlimit) {
		field.value = field.value.substring(0, maxlimit);
	} else {
		countfield.value = maxlimit - field.value.length;
	}
}

		
  function checkMail()
  {
   if(document.Form.txtname.value == "")
    {
     alert("Please insert your last name!");
     document.Form.txtname.focus();
     return false;
    }
   if(document.Form.txtvname.value == "")
    {
     alert("Please insert your first name!");
     document.Form.txtvname.focus();
     return false;
    }
   if(document.Form.txtemail.value == "")
    {
     alert("Please insert your e-mail address!");
     document.Form.txtemail.focus();
     return false;
    }
   if(document.Form.txtchild_vname.value == "")
    {
     alert("Please insert Child's first name!");
     document.Form.txtchild_vname.focus();
     return false;
    }
    if(document.Form.txtchild_name.value == "")
    {
     alert("Please insert Child's last name!");
     document.Form.txtchild_name.focus();
     return false;
    }
    if(document.Form.txtgebort.value == "")
    {
     alert("Please insert Child's place of birth!");
     document.Form.txtgebort.focus();
     return false;
    }
   if(document.Form.txtemail.value.indexOf('@') == -1)
    {
     alert("Sorry, invalid e-mail address!");
     document.Form.txtemail.focus();
     return false;
    }
   var chkZ = 1;
   for(i=0;i<document.Formular.Alter.value.length;++i)
     if(document.Formular.Alter.value.charAt(i) < "0"
     || document.Formular.Alter.value.charAt(i) > "9")
       chkZ = -1;
   if(chkZ == -1)
   {
     alert("Altersangabe keine Zahl!");
     document.Formular.Alter.focus();
     return false;
    }
  }