function siparis_kontrol(onay_kod_deger,m84,m86,m87,m88,m89){
	if (document.getElementById("ad_soyad").value == ""){
		window.alert(m84);
		document.getElementById("ad_soyad").focus();
		return false;
	}

//email
	if (document.getElementById("email").value == ""){
		window.alert(m86);
		document.getElementById("email").focus();
		return false;
	}
	var kod=document.getElementById("email").value;
	if ((kod.indexOf ('@',0) == -1) || (kod.indexOf('.',0) == -1) || (kod.indexOf(' ',0) != -1) || (kod.length<6)){
		alert (m87);
		document.getElementById("email").focus();
		return false;
	}
	var epostad="1234567890abcdefghijklmnopqrstuvyzxwABCDEFGHIJKLMNOPQRSTUVYZXW.@_-";
	for (var i=0;i<kod.length;i++){
	if (epostad.indexOf (kod.substr(i,1),0) == -1){
        alert (m87);
       	document.getElementById("email").focus();
		return false;
		}
	}
	var atler = 0;
	for (var i=0;i<kod.length;i++) if (kod.substr(i,1) == '@') atler = atler + 1;
	if (atler > 1){
		alert (m87);
       	document.getElementById("email").focus();
		return false;
	}
	var at, nokta
	at =  kod.indexOf('@',0)
	nokta = kod.indexOf('.',at)
	if ((at < 1) || (nokta-at) < 2 ) {
		alert (m87);
       	document.getElementById("email").focus();
		return false;
	}
	var noktavar = true;
	if (''+document.getElementById("email").value.charAt(0)=='.') noktavar = false;
	if (''+document.getElementById("email").value.charAt(document.getElementById("email").value.length-1)=='.') noktavar = false;
	if (noktavar == false){
		alert(m87);
		document.getElementById("email").focus();
		return noktavar;
	}
//email
	if (document.getElementById("guvenlik_kodu").value == ""){
		window.alert(m88);
		document.getElementById("guvenlik_kodu").focus();
		return false;
	}
	if (document.getElementById("guvenlik_kodu").value != onay_kod_deger){
		window.alert(m89);
		document.getElementById("guvenlik_kodu").focus();
		return false;
	}
	return true;	
}