//Nastaveni JS
var divname = "";
var tipobj;
var offsetxpoint=-150; //Vlastni X offset nahledu
var offsetypoint=40; //Vlastni Y offset nahledu
var ie = document.all;
var ns6 = document.getElementById && !document.all;
var enabletip=false;

/*document.write(tipobj);  
document.write('<br>');  
document.write(ie);  
document.write('<br>');  
document.write(ns6);  
*/

function ietruebody() 
{
  return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body;
}

function show_nahled(prvek_id, showit, data) 
{ 
  divname = prvek_id;
  if (ie||ns6)
    tipobj=document.all? document.all[divname] : document.getElementById? document.getElementById(divname) : "";

  document.onmousemove=positiontip; //snima neustale pozici mysi, musi to byt kdyby se to nahodou predefinovano

  if (showit == 1) 
  {
    tipobj.style.zIndex = 1000;
    tipobj.innerHTML = data;
    enabletip = true;
  }
  else 
  {
    enabletip = false;
    tipobj.style.visibility="hidden";
    tipobj.style.zIndex = -1000;
    tipobj.style.left="-1000px";
    tipobj.style.top="-1000px";
    tipobj.className = '';
  }
  return true;
}


// snima pozici mysi
function positiontip(e) 
{ 
  if (enabletip) 
  {
  	// event.x vrati spatne hodnotu nad prvkama ktere jsou position relative, vrati x od leveho horniho rohu prvku misto od leveho horniho rohu cele obrazovky
    //var curX = (ns6)?e.pageX : event.x+ietruebody().scrollLeft; 
    //var curY = (ns6)?e.pageY : event.y+ietruebody().scrollTop;
    
	// nove od  8.5.2007
	var curX = (ns6)?e.pageX : event.clientX+ietruebody().scrollLeft;
    var curY = (ns6)?e.pageY : event.clientY+ietruebody().scrollTop;
	
    //Find out how close the mouse is to the corner of the window
	// tech -20 je osetreni ve FF kvuli posuvnikum, kdyz se objevi, tak se pocitaci do velikosti okna
    var rightedge = ie&&!window.opera? ietruebody().clientWidth-event.clientX-offsetxpoint : window.innerWidth-e.clientX-offsetxpoint-20;
    var bottomedge = ie&&!window.opera? ietruebody().clientHeight-event.clientY-offsetypoint : window.innerHeight-e.clientY-offsetypoint-20;

    var leftedge=(offsetxpoint<0)? offsetxpoint*(-1) : -1000;

    //if the horizontal distance isn't enough to accomodate the width of the context menu
    if (rightedge<tipobj.offsetWidth)
      //move the horizontal position of the menu to the left by it's width
      tipobj.style.left = ie? ietruebody().scrollLeft+event.clientX-tipobj.offsetWidth+"px" : window.pageXOffset+e.clientX-tipobj.offsetWidth+"px";
    else if (curX < leftedge)
      tipobj.style.left="5px";
    else
      //position the horizontal position of the menu where the mouse is positioned
      tipobj.style.left = curX+offsetxpoint+"px";

    //same concept with the vertical position
    if (bottomedge < tipobj.offsetHeight)
      tipobj.style.top=ie? ietruebody().scrollTop+event.clientY-tipobj.offsetHeight-offsetypoint+"px" : window.pageYOffset+e.clientY-tipobj.offsetHeight-offsetypoint+"px";
    else
      tipobj.style.top = curY+offsetypoint+"px";

    tipobj.style.visibility="visible";
  }
}


document.onmousemove=positiontip; //snima neustale pozici mysi