中国第二代身份证验证js代码

      以下这部分代码截取自盛大的某个网页。详细我就不给url了。以下是相应的js代码：

iW = new Array(7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2,1); 
iSum = 0; 
for( i=0;i<17;i++){ 
    iC = v_card.charAt(i) ; 
    iVal = parseInt(iC); 
    iSum += iVal * iW[i]; 
} 
iJYM = iSum % 11; 
var sJYM = ’’; 
if(iJYM == 0) sJYM = "1"; 
else if(iJYM == 1) sJYM = "0"; 
else if(iJYM == 2) sJYM = "x"; 
else if(iJYM == 3) sJYM = "9"; 
else if(iJYM == 4) sJYM = "8"; 
else if(iJYM == 5) sJYM = "7"; 
else if(iJYM == 6) sJYM = "6"; 
else if(iJYM == 7) sJYM = "5"; 
else if(iJYM == 8) sJYM = "4"; 
else if(iJYM == 9) sJYM = "3"; 
else if(iJYM == 10) sJYM = "2"; 
var cCheck = v_card.charAt(17).toLowerCase(); 
if( cCheck != sJYM ){ 
    return false; //对不上就是假号码 
}