function check_shdsn(shdsn){
ajax = InitAjax();
url='check.php?par='+shdsn;
ajax.open("GET",url,false);
ajax.setRequestHeader("Content-Type", "text/html;charset=utf8");
ajax.send(null);


StatsAjax('messageid','a','b','c');
result = ajax.responseText;
//alert(result);
//alert(getObj("AUTOID").value);
if (getObj("AUTOID").value =="")
{
 switch(result){
	case "1":document.getElementById("messageid").innerHTML="送貨單號己存在"; break;
	case "3":document.getElementById("messageid").innerHTML="請輸入送貨單號"; break;
	}
} 
else
	{
	 switch(result){
	//case "1":document.getElementById("messageid").innerHTML="送貨單號己存在"; break;
	case "3":document.getElementById("messageid").innerHTML="請輸入送貨單號"; break;
	}
    }

}