// 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 i_am_ie;		// This is Internet Explorer
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 = 0;  // allow popup to follow cursor...turn off for better performance
var maxwidth = 300;// maximum width of popup window
var showme, hideme;// keyword to show or hide the popup

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);
  }
  i_am_ie = ((navigator.userAgent.indexOf('MSIE') > 0)
		   & (navigator.userAgent.indexOf('Opera') < 0)) ? true : false;
  // Workaround for just another netscape bug: Fix browser confusion on resize
  // obviously conqueror has a similar problem :-(
  if(ns4||kon){ nsfix() }
  if (ns4) { px=""; }
  if (ns4) { showme = "show" ;    hideme = "hide";   }
  else     { showme = "visible" ; hideme = "hidden"; }
  return;
}

function hide(name){
  idiv.visibility = hideme;
  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 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;
    }
	var ix, iy, wintop, winbtm;
	wintop = 0;
	winbtm = winH - 1;
	if (i_am_ie) {
		wintop  = scrollY;
		winbtm += scrollY;
	}

	ix = x + xoffset;
	if ((ix + popupW) > winW) {
	  ix = x - popupW - xoffset;
	  if (ix < 0) { ix = 0; }
	}

	iy = y + yoffset;
	if ((iy + popupH) > winbtm) {
	  iy = winbtm - popupH - 10;
	} else if (iy < wintop) {
	  iy = wintop;
	}

	idiv.left = ix + px;
	idiv.top = iy + px;
    idiv.visibility = showme;
  }
}

function mousemove(e){
  showtip(e);
}
// Initialize after loading the page
window.onload=infoinit;