function checkdata()
{
     var uppervalue;
	 if (document.Contact.name.value.length == 0) {
         alert ("Isminiz???");
         document.Contact.name.focus();
         return false;
     }
	 	 
	var x = document.Contact.mail.value;
	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if (!filter.test(x)){
		alert ("Geçerli bir e-mail adresi giriniz!!!");
		document.Contact.mail.focus();
		 return false;
		}
     
     if (document.Contact.phone.value.length == 0) {
         alert ("Telefon numaraniz???");
         document.Contact.phone.focus();
         return false;
     }
     if (document.Contact.note.value.length == 0) {
         alert ("Mesajiniz?????");
         document.Contact.note.focus();
         return false;
     }
	 
     return true;

}