// JavaScript Document
function chkform1()
{
 if(document.form1.name.value == "")  {
   alert("Check your name, please!");
   document.form1.name.focus();
   return false;
  }
 if(document.form1.vorname.value == "") {
   alert("Check your first name, please!");
   document.form1.vorname.focus();
   return false;
  }
 if(document.form1.email.value == "") {
   alert("Check your e-mail-address, please!!");
   document.form1.email.focus();
   return false;
  }
 if(document.form1.email.value.indexOf('@') == -1) {
   alert("The e-mail-address is not correct!");
   document.form1.email.focus();
   return false;
  }
 }