function passwordStrength(password)

{

    var desc = new Array();

    desc[0] = "Very Weak";

    desc[1] = "Weak";

    desc[2] = "Better";

    desc[3] = "Medium";

    desc[4] = "Strong";

    desc[5] = "Strongest";

    var score = 0;

    //if password bigger than 6 give 1 point

    if (password.length > 6) score++;


    //if password has both lower and uppercase characters give 1 point

    if (( password.match(/[a-z]/) ) && ( password.match(/[A-Z]/) )) score++;


    //if password has at least one number give 1 point

    if (password.match(/\d+/)) score++;


    //if password has at least one special caracther give 1 point

    if (password.match(/.[!,@,#,$,%,^,&,*,?,_,~,-,(,)]/)) score++;


    //if password bigger than 12 give another 1 point

    if (password.length > 12) score++;


    document.getElementById("passwordDescription").innerHTML = desc[score];

    document.getElementById("passwordStrength").className = "strength" + score;


}