// The following code is used to support the small popups that
// give the full description of an event when the user move the
// mouse over it.
// Thanks to Klaus Knopper (www.knoppix.com) for this script.
// It has been modified to work with the existing WebCalendar
// architecture on 02/25/2005
//
// 03/05/2005 Prevent popup from going off screen by setting
// maximum width, which is cnfigurable
//
// Bubblehelp infoboxes, (C) 2002 Klaus Knopper <infobox@knopper.net>
// You can copy/modify and distribute this code under the conditions
// of the GNU GENERAL PUBLIC LICENSE Version 2.
//
var ns4            // Are we using Netscape4?
var ie4            // Are we using Internet Explorer Version 4?
var ie5            // Are we using Internet Explorer Version 5 and up?
var kon            // Are we using KDE Konqueror?
var x,y,winW,winH  // Current help position and main window size
var idiv = null    // Pointer to infodiv container
var px = "px"      // position suffix with "px" in some cases
var popupW         // width of popup
var popupH         // height of popup
var xoffset = 8    // popup distance from cursor x coordinate
var yoffset = 12   // popup distance from cursor y coordinate
var followMe = 1   // allow popup to follow cursor...turn off for better performance
var maxwidth = 300 // maximum width of popup window

function nsfix()
{
  setTimeout("window.onresize = rebrowse", 2000);
}

function rebrowse()
{
  window.location.reload();
}

function infoinit()
{
  ns4 = (document.layers)?true:false;
  ie4 = (document.all)?true:false;
  ie5 = ((ie4)&&((navigator.userAgent.indexOf('MSIE 5')>0)||(navigator.userAgent.indexOf('MSIE 6')>0)))?true:false;
  kon = (navigator.userAgent.indexOf('konqueror')>0)?true:false;
  x = 0;
  y = 0;
  winW = 800;
  winH = 600;
  idiv = null;
  if (followMe)
  {
    document.onmousemove = mousemove;
    if (ns4&&document.captureEvents)
    {
      document.captureEvents(Event.MOUSEMOVE);
    }
  }
  // Workaround for just another netscape bug: Fix browser confusion on resize
  // obviously conqueror has a similar problem :-(
  if (ns4 || kon)
  {
    nsfix();
  }
  if (ns4)
  {
    px = "";
  }
}

function txt_hide(name)
{
  idiv.visibility = (ns4)?"hide":"hidden";
  idiv = null;
}

function gettip(name)
{
  return (document.layers&&document.layers[name])?document.layers[name]:(document.all&&document.all[name]&&document.all[name].style)?document.all[name].style:document[name]?document[name]:(document.getElementById(name)?document.getElementById(name).style:0);
}

function txt_show(evt, name)
{
  if (idiv)
  {
    hide(name);
  }
  idiv = gettip(name);
  if (idiv)
  {
    scrollX = 0;
    scrollY = 0;
    winW = (window.innerWidth)?window.innerWidth+window.pageXOffset-16:document.body.offsetWidth-20;
    winH = (window.innerHeight)?window.innerHeight+window.pageYOffset:document.body.offsetHeight;
    scrollX = (typeof window.pageXOffset == "number")?window.pageXOffset:(document.documentElement && document.documentElement.scrollLeft)?document.documentElement.scrollLeft:(document.body && document.body.scrollLeft)?document.body.scrollLeft:window.scrollX;
    scrollY = (typeof window.pageYOffset == "number")?window.pageYOffset:(document.documentElement && document.documentElement.scrollTop)?document.documentElement.scrollTop:(document.body && document.body.scrollTop)?document.body.scrollTop:window.scrollY;
    popupW = document.getElementById(name).offsetWidth;
    popupH = document.getElementById(name).offsetHeight;   

    showtip(evt);
  }
}

function showtip(e)
{
  e = (e)?e:window.event;
  if (idiv)
  {
    if (e)
    {
      x = (e.pageX)?e.pageX:(e.clientX)?e.clientX+scrollX:0; 
      y = (e.pageY)?e.pageY:(e.clientY)?e.clientY+scrollY:0;
    }
    else
    {
      x = 0;
      y = 0;
    }
    // Make sure we don't go off screen
    if (popupW > maxwidth)
    { 
      popupW = maxwidth;
      idiv.width = maxwidth + px;
    }  
    idiv.left = (((x + popupW + xoffset)>winW)?x - popupW - xoffset:x + xoffset)+px;
    if ((popupH + yoffset) > winH)
    {
      idiv.top = yoffset + px;
    }
    else
    {
      idiv.top = (((y + popupH + yoffset)>winH)?winH - popupH - yoffset:y + yoffset)+px;
    }
    idiv.visibility = (ns4)?"show":"visible";
  }
}

function mousemove(e)
{
  showtip(e);
}

// Initialize after loading the page
window.onload = infoinit;