function stripCharsNotInBag (s)

{   var i;
    var returnString = "";
	var bag  = "_.-#@0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ\" ";
    // Search through string's characters one by one.
    // If character is in bag, append to returnString.

    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (bag.indexOf(c) != -1) returnString += c;
    }

    return returnString;
}


function stripCharsNotInBagpass(s)

{   var i;
    var returnString = "";
	var bag  = "_.-#@~!@#$%^&*()_+{}|[]\<>?/0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ\" ";
    // Search through string's characters one by one.
    // If character is in bag, append to returnString.

    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (bag.indexOf(c) != -1) returnString += c;
    }

    return returnString;
}



function stripCharsInBag (s)

{   var i;
    var returnString = "";
    var bag  = "'\",";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
   
  
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }

    return returnString;
}


function stripCharsInBagspace (s)

{   var i;
    var returnString = "";
    var bag  = " ";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
   
  
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }

    return returnString;
}