function ID15T18(strTemp){ var arrInt = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2); var arrCh = new Array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');  var nTemp = 0, i;  if(strTemp.length==15) {  strTemp = strTemp.substr(0,6) + '19' + strTemp.substr(6,strTemp.length-6); for(i = 0; i < strTemp.length; i ++) {  nTemp += strTemp.substr(i, 1) * arrInt[i]; }

 strTemp += arrCh[nTemp % 11];  }   return strTemp;}