//preload obrazkow
function preload(imgObj,imgSrc)
{
 if (document.images)
 {
  eval(imgObj+' = new Image()');
  eval(imgObj+'.src = "'+imgSrc+'"');
 }
}

function changeImg(imgName,imgObj)
{
 try
 {
  if(document.getElementById(imgName))
  document.getElementById(imgName).src=eval(imgObj+".src");
  else
  imgName.src=eval(imgObj+".src");
 }
 catch(e)
 {}
}

function changeBgImg(imgName,imgObj)
{
 try
 {
  img=eval(imgObj+".src");
  if(document.getElementById(imgName))
  document.getElementById(imgName).style.backgroundImage='url('+img+')';
  else
  imgName.style.backgroundImage='url('+img+')';
 }
 catch(e)
 {}
}

//wszystkie strony
preload("zzz1",root+"graph/gr_preview_top.png");
preload("zzz2",root+"graph/gr_preview_bottom.png");
preload("zzz3",root+"graph/bg_preview_right.png");
preload("zzz1spec",root+"graph/gr_preview_top_mamdziecko.png");
preload("zzz2spec",root+"graph/gr_preview_bottom_mamdziecko.png");
preload("zzz3spec",root+"graph/bg_preview_right_mamdziecko.png");
preload("ic_mini_ov",root+"graph/ic_mini_ov.gif");
preload("ic_mini",root+"graph/ic_mini.gif");