//
// 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 IWIDTH=200  // Tip box width
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 map_layer container
var px="px"     // position suffix with "px" in some cases

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

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

function hascss(){ return gettip('map_layer')?true:false }

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;
 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=""; }
 maps = document.getElementsByTagName("map");
 for (i=0; i<maps.length; i++)  {
  map = maps[i];
  if (map.getAttribute("id").indexOf("map") == 0) {
   links = map.areas;
   for (j=0; j<links.length; j++) {
    links[j].setAttribute("title","");
   }
  }
 }
}

function untip(){
 if(idiv) 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);
}

// Prepare tip boxes, but don't show them yet
function maketip(name, text){
	if(hascss()){
		document.write('<div class="marker-layer" id="'+name+'" name="'+name+'" style="position: absolute; visibility:hidden; z-index:20; top:0'+px+'; left:0'+px+'; width: '+IWIDTH+'px;">'+text+'</div>'+"\n");
	}
}

function tip(name){
	if(hascss()){
		if(idiv) untip();
		idiv=gettip(name);
		if(idiv){
			winW=(window.innerWidth)? window.innerWidth+window.pageXOffset-16:document.body.offsetWidth-20;
			winH=(window.innerHeight)?window.innerHeight+window.pageYOffset  :document.body.offsetHeight;
			if(x<=0||y<=0){ // konqueror can't get mouse position
				x=(winW-IWIDTH)/2+(window.pageXOffset?window.pageXOffset:0); y=(winH-50)/2+(window.pageYOffset?window.pageYOffset:0); // middle of window
			}
			showtip();
		}
	}
}

function showtip(){

	//get the surrounding element of the tip, named "map_container"
	var container = null;
	if (document.layers&&document.layers['map_container']) {
		container = document.layers['map_container'];
	}
	else if (document.all&&document.all['map_container']) {
		container = document.all['map_container'];
	}
	else if (document['map_container']) {
		container = document['map_container'];
	} else if (document.getElementById('map_container')) {
		container = document.getElementById('map_container');
	}
		
	//calculate the real position of the surrounding element
	var correct_x=0;	
	var correct_y=0;	
	while (container) {
		correct_x = correct_x + container.offsetLeft;
		correct_y = correct_y + container.offsetTop;

		container = container.offsetParent;
	}

	//change the x/y-values to position the tip under the explorer tip
	correct_x = correct_x - 8;
	correct_y = correct_y;


	//set the position, but consider the available space and correct it if necessary
	idiv.left=(((x+220)<winW)?x-correct_x+0:x-correct_x-220)+px;
	idiv.top=(((y+90)<winH)?y-correct_y:y-correct_y)+px;
	idiv.visibility=ns4?"show":"visible";

	//window.status="idiv="+idiv+"X:"+(idiv.left?idiv.left:"NAN")+", Y:"+(idiv.top?idiv.top:"NAN")+", Mouse x:"+x+", y:"+y + " Container: " + posx + " : " + posy;
}

function mousemove(e){
	if(e){
		x=e.pageX?e.pageX:e.clientX?e.clientX:0;
		y=e.pageY?e.pageY:e.clientY?e.clientY:0;
	}
	else if(event){
		x=event.clientX; y=event.clientY;
	}
	else{
		x=0; y=0;
	}
	

	if((ie4||ie5) && document.documentElement) { // Workaround for scroll offset of IE
		x+=document.documentElement.scrollLeft;
		y+=document.documentElement.scrollTop;
	}
	if(idiv) {
		showtip();
	}
}

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

// EOF infobox.js