function clickDiv(divID)
{
  s = divID + "img";
  el = document.getElementById(divID).style;
  if (el.display == 'block')
   {
     el.display = "none";
     document.images[s].src = "imgs/plus.gif";
     document.images[s].alt = "rozbalit"
   } else
   {
     el.display = "block";
     document.images[s].src = "imgs/minus.gif";
     document.images[s].alt = "zbalit"
   }
};

/*var pole = window.location.search.substr(1).split("&");
var httpGetVars = new Array();
var treeID = 0;
for(i = 0; i < pole.length; i++){
  httpGetVars[pole[i].split("=")[0]] = unescape(pole[i].split("=")[1]);
  }
treeID = httpGetVars["tree"];

// document.write(treeID)
el = document.getElementById("sub1_1").style;
el.display = ((treeID & 1) == 0)?'none':'block';*/