// -*- C -*-
var Geometry = {};

if (window.screenLeft) { // IE and others
    Geometry.getWindowX = function() { return window.screenLeft; };
    Geometry.getWindowY = function() { return window.screenTop; };
}
else if (window.screenX) { // Firefox and others
    Geometry.getWindowX = function() { return window.screenX; };
    Geometry.getWindowY = function() { return window.screenY; };
}

if (window.innerWidth) { // All browsers but IE
    Geometry.getViewportWidth = function() { return window.innerWidth; };
    Geometry.getViewportHeight = function() { return window.innerHeight; };
    Geometry.getHorizontalScroll = function() { return window.pageXOffset; };
    Geometry.getVerticalScroll = function() { return window.pageYOffset; };
}
else if (document.documentElement && document.documentElement.clientWidth) {
    // These functions are for IE6 when there is a DOCTYPE
    Geometry.getViewportWidth =
        function() { return document.documentElement.clientWidth; };
    Geometry.getViewportHeight =
        function() { return document.documentElement.clientHeight; };
    Geometry.getHorizontalScroll =
        function() { return document.documentElement.scrollLeft; };
    Geometry.getVerticalScroll =
        function() { return document.documentElement.scrollTop; };
}
else if (document.body.clientWidth) {
    // These are for IE4, IE5, and IE6 without a DOCTYPE
    Geometry.getViewportWidth =
        function() { return document.body.clientWidth; };
    Geometry.getViewportHeight =
        function() { return document.body.clientHeight; };
    Geometry.getHorizontalScroll =
        function() { return document.body.scrollLeft; };
    Geometry.getVerticalScroll =
        function() { return document.body.scrollTop; };
}

// These functions return the size of the document.  They are not window
// related, but they are useful to have here anyway.
if (document.body && document.body.scrollWidth) {
    Geometry.getDocumentWidth =
        function() { return document.body.scrollWidth; };
    Geometry.getDocumentHeight =
        function() { return document.body.scrollHeight; };
}
else {
  if (document.documentElement && document.documentElement.scrollWidth) {
    Geometry.getDocumentWidth =
        function() { return document.documentElement.scrollWidth; };
    Geometry.getDocumentHeight =
        function() { return document.documentElement.scrollHeight; };
  }
}

var loginHasFocus, loginHadFocus;
loginHasFocus = false;
loginHadFocus = false;

function loginFocus()
{
  if (document.login && document.login.account &&
      !loginHasFocus &&
      document.login.account.value == "") {
    if (Geometry.getViewportHeight() >= Geometry.getDocumentHeight())
      document.login.account.focus();
  }
  else if (loginHasFocus && document.login.account.value == "") {
    if (Geometry.getViewportHeight() < Geometry.getDocumentHeight()) {
      document.login.account.blur();
    }
  }
}

function stmLoadPage() {
  loginFocus();
  if (self.stmLocalLoadPage)
    stmLocalLoadPage();
  if (self.GLoad)
    GLoad();
}

function stmUnloadPage() {
  if (self.stmLocalUnloadPage)
    stmLocalUnloadPage();
  if (self.GUnload)
    GUnload();
}

// set the radio button with the given value as being checked
// do nothing if there are no radio buttons
// if the given value does not exist, all the radio buttons
// are reset to unchecked
function setCheckedValue(radioObj, newValue) {
  if (!radioObj)
    return;

  var radioLength = radioObj.length;
  if (radioLength == undefined) {
    radioObj.checked = (radioObj.value == newValue.toString());
    return;
  }
  
  for (var i = 0; i < radioLength; i++) {
    radioObj[i].checked = false;
    if (radioObj[i].value == newValue.toString())
      radioObj[i].checked = true;
  }
}