// 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 = 180   // absolute popup y distance - hard to get relative distance
var followMe = 0   // allow popup to follow cursor...turned off for better performance
var maxwidth = 250 // 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=771 - xoffset;//771 is width of main container div
  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 hide(name){
  idiv.visibility=ns4?"hide":"hidden";
  idiv=null;
}


// this gets the offset of the mouse position from relative to the containing div
// this is why we delete the last offset added - as this would then be relative to the 
// whole window only do for left position, top position is OK
function getposOffset(what, offsettype){
	var totaloffset=(offsettype=="left")? what.offsetLeft : what.offsetTop;
	var parentEl=what.offsetParent;
	var suboffset = 0;
		while (parentEl!=null){
		addoffset=(offsettype=="left")? parentEl.offsetLeft : parentEl.offsetTop;
		if (addoffset >0){
			suboffset = addoffset;
		}
			
		totaloffset=totaloffset+addoffset;

		parentEl=parentEl.offsetParent;
	}
	if(offsettype=="left"){
		return totaloffset - suboffset;;
	}
	else{
		return totaloffset;
	}
}

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, obj){
  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; //just use fixed winW



   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, obj);

  }
}

function showtip(e, obj){
	// obj is the object the tip is anchored to
  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;
//    }



	x = getposOffset(obj, "left");
//	y = getposOffset(obj, "top");




    // don't go wider than maxwidth for popup
    if ( popupW > maxwidth ) { 
      popupW = maxwidth;
    }
    idiv.width = popupW + px;
      
//    idiv.left=(((x + popupW + xoffset)>winW)?x - popupW - xoffset:x + xoffset)+px;
	xleft = x + xoffset;
	if((xleft + popupW) > winW){
		xleft = winW - popupW;
	}

	idiv.left = xleft + px;

//    if ((popupH + yoffset)>winH) {
//      idiv.top= yoffset + px;
//    } else {
//      idiv.top=(((y + popupH + yoffset)>winH)?winH - popupH - yoffset:y + yoffset)+px;
//    }
    

    idiv.top= yoffset + px;
    
    idiv.visibility=ns4?"show":"visible";
    }
}

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