// JScript File

function JSrot13(text) 
{
    var rot13text_rotated = ""; /* the function will return this string */;

    for (i = 1 ; i < (text.length + 1); i++) 
    {

        k = text.charCodeAt(i-1);

        if (k >= 97 && k <= 109) 
        {
            k = k + 13;
        } 
        else if (k >= 110 && k <= 122) 
        {
            k = k - 13;
        } 
        else if (k >= 65 && k <= 77) 
        {
            k = k + 13;
        } 
        else if (k >= 78 && k <= 90) 
        {
            k = k - 13;
        }
        
        rot13text_rotated = rot13text_rotated + String.fromCharCode(k);

    }
    
    return rot13text_rotated;
}