checkControlSumJuridical

function checkControlSumJuridical(value){
    var code = value.split(''),
        numericValue = +value,
        x;

    if ((numericValue < 30000000) || (numericValue > 60000000)){
        x = code[0] + code[1] * 2 + code[2] * 3 + code[3] * 4 + code[4] * 5 + code[5] * 6 + code[6] * 7;
    } else{
        x = code[0] * 7 + code[1] + code[2] * 2 + code[3] * 3 + code[4] * 4 + code[5] * 5 + code[6] * 6;
    }

    x = x - (11 * Math.floor(x / 11));
    if (x === 10){
        if ((numericValue < 30000000) || (numericValue > 60000000)){
            x = code[0] * 3 + code[1] * 4 + code[2] * 5 + code[3] * 6 + code[4] * 7 + code[5] * 8 + code[6] * 9;
        } else{
            x = code[0] * 9 + code[1] * 3 + code[2] * 4 + code[3] * 5 + code[4] * 6 + code[5] * 7 + code[6] * 8;
        }
        x = x - (11 * Math.floor(x / 11));
        if (x === 10){
            x = 0;
        }
    }

    return +code[7] === x;
}