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<javascript language="javascript">
function check_sap()
{
//alert(document.getElementById("sap_code").value);
var sapCode = document.getElementById("sap_code").value;
var check_num
var re = /^\d{8}$/;
if(!re.test(sapCode)){
alert("SAP Code±ØÐëΪ8λÊý×Ö£¡");
return false;
}
if(re.test(sapCode))
{
var xmlhttp
if(window.ActiveXObject){
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
else if(window.XMLHttpRequest){
xmlHttp = new XMLHttpRequest();
}
var URL
URL="check_sap.asp?scode="+sapCode;
xmlHttp.open("GET",URL,true);
xmlHttp.send(null);
var check_num
check_num=xmlHttp.responseText;
alert(check_num);
return false;
}
return false;
}
end function
</script>
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Òª¼ÓÉÏxmlHttp.onstatereadychange=function(){
    if(xmlHttp.readyStatu==4){
        if(xmlHttp.sta