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             if (document.form1.txt_ReceiptID.value == "") {
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                 document.form1.txt_ReceiptID.focus();
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                    {
                        alert("±¨Ïúµ¥ºÅΪÊý×Ö£¡");                       
                         document.form1.txt_ReceiptID.focus();
                         return false;
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