// xDocSize r1, Copyright 2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xDocSize()
{
  var b=document.body, e=document.documentElement;
  var esw=0, eow=0, bsw=0, bow=0, esh=0, eoh=0, bsh=0, boh=0;
  if (e) {
    esw = e.scrollWidth;
    eow = e.offsetWidth;
    esh = e.scrollHeight;
    eoh = e.offsetHeight;
  }
  if (b) {
    bsw = b.scrollWidth;
    bow = b.offsetWidth;
    bsh = b.scrollHeight;
    boh = b.offsetHeight;
  }
//  alert('compatMode: ' + document.compatMode + '\n\ndocumentElement.scrollHeight: ' + esh + '\ndocumentElement.offsetHeight: ' + eoh + '\nbody.scrollHeight: ' + bsh + '\nbody.offsetHeight: ' + boh + '\n\ndocumentElement.scrollWidth: ' + esw + '\ndocumentElement.offsetWidth: ' + eow + '\nbody.scrollWidth: ' + bsw + '\nbody.offsetWidth: ' + bow);
  return {w:Math.max(esw,eow,bsw,bow),h:Math.max(esh,eoh,bsh,boh)};
}

// xAddEventListener r8, Copyright 2001-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xAddEventListener(e,eT,eL,cap)
{
  if(!(e=xGetElementById(e)))return;
  eT=eT.toLowerCase();
  if(e.addEventListener)e.addEventListener(eT,eL,cap||false);
  else if(e.attachEvent)e.attachEvent('on'+eT,eL);
  else {
    var o=e['on'+eT];
    e['on'+eT]=typeof o=='function' ? function(v){o(v);eL(v);} : eL;
  }
}

// xModalDialog r2, Copyright 2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL

function xModalDialog(sDialogId) // Object Prototype
{
  /*@cc_on @if (@_jscript_version >= 5.5) @*/ //  not supported in IE until v5.5
  this.dialog = xGetElementById(sDialogId);
  xModalDialog.instances[sDialogId] = this;
  var e = xModalDialog.grey;
  if (!e) { // only one per page
    e = document.createElement('div');
    e.className = 'xModalDialogGreyElement';
    xModalDialog.grey = document.body.appendChild(e);
  }
  /*@end @*/
}

// Public Methods

xModalDialog.prototype.show = function()
{
  var ds, e = xModalDialog.grey;
  if (e) {
    this.dialog.greyZIndex = xGetComputedStyle(e, 'z-index', 1);
    e.style.zIndex = xGetComputedStyle(this.dialog, 'z-index', 1) - 1;
    ds = xDocSize();
    xMoveTo(e, 0, 0);
    xResizeTo(e, ds.w, ds.h);
    if (this.dialog) {
      xMoveTo(this.dialog,
              xScrollLeft()+(xClientWidth()-this.dialog.offsetWidth)/2,
              xScrollTop()+(xClientHeight()-this.dialog.offsetHeight)/2);
    }
  }
};

xModalDialog.prototype.hide = function(dialogOnly)
{
  var e = xModalDialog.grey;
  if (e) {
    if (!dialogOnly) {
      xResizeTo(e, 10, 10);
      xMoveTo(e, -10, -10);
    }
    if (this.dialog) {
      e.style.zIndex = this.dialog.greyZIndex;
      xMoveTo(this.dialog, -this.dialog.offsetWidth, 0);
    }
  }
};

// Static Properties

xModalDialog.grey = null;
xModalDialog.instances = {};