var styl;
function pozAdd(x, y) {
  if(document.all)
   styl=document.all.flashek.style;
  else if(navigator.product=='Gecko')
   styl=document.getElementById("flashek").style;
  document.x=styl.left=x;
  document.y=styl.top=y;
}

function showAdd()
{
  pozAdd('200px', '310px');
  styl.visibility="visible";
}

function hideAdd() {
  styl.visibility="hidden";
}