function podmien(numer, nazwa) 
{
    if(document.images)
    document[nazwa].src = img[numer].src; 
}


if (document.getElementById){
document.write('<style type="text/css">\n')
document.write('.submenu{display: none;}\n')
document.write('</style>\n')
}

function SwitchMenu(obj){
if(document.getElementById){
var el = document.getElementById(obj);
var ar = document.getElementById("masterdiv").getElementsByTagName("span"); //DynamicDrive.com change
if(el.style.display != "block"){ //DynamicDrive.com change

el.style.display = "block";
}else{
el.style.display = "none";
}
}
}

window.onload = function() {
  nodes = document.getElementById('nav').getElementsByTagName('li');
  for (i=0; i != nodes.length; i++) {
    nodes[i].onmouseover = function() {
      this.className = 'over';
    }
    nodes[i].onmouseout = function() {
      this.className = this.className.replace('over', '');
  }
  }
}

function change_values(obj) {
if (obj.value == obj.defaultValue)
obj.value = "";
else if (obj.value == "")
obj.value = obj.defaultValue;
}



function shz(j,k)
{
   var t = 'zk'+j;
   var nodes = document.getElementById(t).childNodes;
   for (var i = 0; i < nodes.length; i++)
   {
     var act=(i==k) ? 'block' : 'none';
     nodes[i].style.display = act;
}
}