function check_email(e) {
ok = "1234567890qwertyuiop[]asdfghjklzxcvbnm.@-_QWERTYUIOPASDFGHJKLZXCVBNM";

for(i=0; i < e.length ;i++){
if(ok.indexOf(e.charAt(i))<0){ 
return (false);
}	
} 

if (document.images) {
re = /(@.*@)|(\.\.)|(^\.)|(^@)|(@$)|(\.$)|(@\.)/;
re_two = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/;
if (!e.match(re) && e.match(re_two)) {
return (-1);		
} 

}

}

function contactCheck() {
var themessage = "Lutfen Tum Alanlari Doldurun: ";
if (document.contact.firstname.value=="") {
themessage = themessage + "\n * Isim";
}
if (document.contact.lastname.value=="") {
themessage = themessage + "\n * Soyadi";
}
if (!check_email(document.contact.email.value)) {
themessage = themessage + "\n * Gecersiz Email";
document.contact.email.focus(); 
}
if (document.contact.question.value=="") {
themessage = themessage + "\n * Soru";
}
if (document.contact.phone.value=="") {
themessage = themessage + "\n * Telefon";
}
 if (document.contact.company.value=="") {
themessage = themessage + "\n * Sirket Ismi";
}
if (document.contact.location.value=="") {
themessage = themessage + "\n * Sirketin Bulundugu Yer";
}



//alert if fields are empty and cancel form submit
if (themessage == "Lutfen Tum Alanlari Doldurun: ") {
document.contact.submit();
}

else {
alert(themessage);
return false;
   }
}

function applicationCheck() {
var themessage = "Lutfen Tum Alanlari Doldurun: ";
if (document.application.company.value=="") {
themessage = themessage + "\n * Sirket Ismi";
}
if (document.application.companyAddress.value=="") {
themessage = themessage + "\n * Adress";
}
if (document.application.companyCity.value=="") {
themessage = themessage + "\n * Sehir";
}
if (document.application.companyState.value=="") {
themessage = themessage + "\n * Eyalet";
}
if (document.application.companyZip.value=="") {
themessage = themessage + "\n * Posta Kodu";
}
if (document.application.companyTelephone.value=="") {
themessage = themessage + "\n * Telefon";
}

if (document.application.companyFax.value=="") {
themessage = themessage + "\n * Faks";
}
if (document.application.companyWebsite.value=="") {
themessage = themessage + "\n * Website";
}
if (document.application.BusinessType.value=="") {
themessage = themessage + "\n * Is Turu";
}
if (document.application.NumberEmployees.value=="") {
themessage = themessage + "\n * Eleman Sayisi";
}

if (document.application.YearEstablished.value=="") {
themessage = themessage + "\n * Kurulus Tarisi";
}

if (document.application.PrimaryContact.value=="") {
themessage = themessage + "\n * Isim";
}
if (document.application.PrimaryEmail.value=="") {
themessage = themessage + "\n * Email";
}
if (document.application.PrimaryTitle.value=="") {
themessage = themessage + "\n * Rutbe";
}

if (document.application.BillingContact.value=="") {
themessage = themessage + "\n * Faturalama-Isim";
}
if (document.application.BillingEmail.value=="") {
themessage = themessage + "\n * Faturalama-Email";
}
if (document.application.BillingTitle.value=="") {
themessage = themessage + "\n * Faturalama-Rutbe";
}

if (document.application.paymentType.value=="") {
themessage = themessage + "\n * Odeme Turu";
}

if (document.application.membershipType.value=="") {
themessage = themessage + "\n * Uyelik Turu";
}
//alert if fields are empty and cancel form submit
if (themessage == "Lutfen Tum Alanlari Doldurun: ") {
document.application.submit();
}

else {
alert(themessage);
return false;
   }
}