function toInt(c) {
  return c.charCodeAt(0);
}


function getKeyCode(evt) {
  if (typeof(evt)=='string') return evt.charCodeAt(0);
  return document.all? event.keyCode: (evt && evt.which)? evt.which: 0;
}

function gotoPage(s) {
    if (s != '') location.href = s;
    return 1;
}

function trimLeft(s) {
    var whitespaces = " \t\n\r";
    for(n = 0; n < s.length; n++) { if (whitespaces.indexOf(s.charAt(n)) == -1) return (n > 0) ? s.substring(n, s.length) : s; }
    return("");
}

function trimRight(s){
    var whitespaces = " \t\n\r";
    for(n = s.length - 1; n  > -1; n--) { if (whitespaces.indexOf(s.charAt(n)) == -1) return (n < (s.length - 1)) ? s.substring(0, n+1) : s; }
    return("");
}

function trim(s) {return ((s == null) ? "" : trimRight(trimLeft(s))); }

function isSelected(field, strBodyHeader) {
    for(i=0; i < field.length; i++) { 
        if (field[i].selected && (trim(field[i].value).length > 0)) {
            return true;
        }
    }
    alert("\"" + strBodyHeader + "\" is a required field. Please choose a selection.");
    field.focus();
    return false;
}

// the num should be character or string with length=1
function isDigit(num) {
    if (num.length > 1) {
        return false;
    }
    var string = "1234567890";
    if (string.indexOf(num) != -1) {
        return true;
    }
    return false;
}

var emailPat=/^(.+)@(.+)$/;
var specialChars="\\(\\)><@,;:\\\\\\\"\\.\\[\\]";
var validChars="\[^" + specialChars + "\]";
var quotedString="(\"[^\"]*\")";
var ipDomainPat=/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/;
var atom=validChars + '+';
var word="(" + atom + "|" + quotedString + ")";
var atomPat=new RegExp("^" + atom + "$");
var localPat=new RegExp("^" + word + "(\\." + word + ")*$");
var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");
var complexPat=/^(.+)<(.+)>$/;
var commentPat=/(.*)\((.*)\)(.*)$/;

function showhide(id) {
  el = document.all ? document.all[id] : 
    dom ? document.getElementById(id) : 
    document.layers[id];
  els = dom ? el.style : el;
  if (dom){
    if (els.display == "none")
      els.display = "";
    else els.display = "none";
  } else if (ns4){
    if (els.display == "show")
      els.display = "hide";
    else els.display = "show";
  }
}