function ValidateUserInput()
{
	if ( Form1.konu.value ==""){
		alert("Please enter your message subject!");
		Form1.konu.focus();
		return false;
	}
	if ( Form1.adsoyad.value ==""){
		alert("Please enter your name and surname!");
		Form1.adsoyad.focus();
		return false;
	}
	var mailadresi = Form1.email.value ;
	if ((mailadresi.indexOf('@',0) == -1) || (mailadresi.indexOf('.',0) == -1) || (mailadresi.indexOf(' ',0) != -1) )
	{
		alert("Please enter your e-mail!");
		Form1.email.focus();
		return false;
	}
	if ( Form1.mesaj.value== ""){
		alert("Please enter your message!");
		Form1.mesaj.focus();
		return false;
	}
	return true;
}