function checkform ( form )
{
	
  if (form.fname.value == "") {
    alert("Please enter your first name.");
    form.fname.focus();
    return false ;
  }
	
  if (form.lname.value == "") {
    alert("Please enter your last name.");
    form.lname.focus();
    return false ;
  }
	
  if (form.email.value == "") {
    alert("Please enter your email address.");
    form.email.focus();
    return false ;
  }
  
   var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
   var address = form.email.value;
   if(reg.test(address) == false) {
      alert("Invalid Email Address");
      return false;
   }
   
  if (form.state.value == "") {
    alert("Please select your state.");
    form.state.focus();
    return false ;
  }
   	
  if (form.zip.value == "") {
    alert("Please enter your zip code.");
    form.zip.focus();
    return false ;
  }
  return true ;
}