//List of Functions:
//
// is_alpha_num (string) --> Returns True if only Alpha Chars and Numbers A-Z, 0-9



function is_alpha_num (str_checkme)
{

  var is_valid=true;
  var i_loop=0;
  var ind_char="";

  while (i_loop<str_checkme.length && is_valid==true)
  {
    
    ind_char=str_checkme.substr(i_loop,1);

    if (ind_char!=" " && (ind_char<"0" || ind_char>"9") && (ind_char<"A" || ind_char>"Z") && (ind_char<"a" || ind_char>"z"))
	is_valid=false;
    i_loop++;
  }
  

  return is_valid;
}



function is_un_pw (str_checkme)
{

  var is_valid=true;
  var i_loop=0;
  var ind_char="";

  while (i_loop<str_checkme.length && is_valid==true)
  {
    
    ind_char=str_checkme.substr(i_loop,1);

    if ((ind_char<"0" || ind_char>"9") && (ind_char<"A" || ind_char>"Z") && (ind_char<"a" || ind_char>"z"))
	is_valid=false;
    i_loop++;
  }
  

  return is_valid;
}