var W3CDOM = (document.createElement && document.getElementsByTagName);
var nav = new Array();

window.onload = init;

function init()
{

	       if (!W3CDOM) return;
	       var nav = document.getElementById('menu');
	       var as =  nav.getElementsByTagName('a');
	       for (var i=0;i<as.length;i++)
	       {
	       
	        if(i==3){
	        
          as[i].onmouseover = ukaz; 	
          }
          else{
	        as[i].onmouseover = schovej; 	
	        }
	  	   }


}

function MM_findObj(n, d) { //v3.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document); return x;
}
var pocetmenu = 1;  
                


 
function ukaz() {
 object="box0";

 if (document.getElementById && document.getElementById(object) != null) {
  document.getElementById(object).style.visibility='visible';
  document.getElementById(object).style.display='block';
 }
 else if (document.layers && document.layers[object] != null){
  document.layers[object].left = ((window.innerWidth / 2) + 230);
  document.layers[object].visibility = 'visible';}
 else if (document.all) {
  document.all[object].style.zIndex = 100;
  document.all[object].style.visibility = 'visible';
 }
}

function schovej() {
 var pocmenu;
 for (i=0;i<pocetmenu;i++) {
        if (document.getElementById)
        {
        eval("window.document.getElementById('box" + i + "').style.visibility = 'hidden'");
        }
        else if (document.layers)
        {
                eval("window.document.layers['box" + i + "'].visibility = 'hidden'");
        }
        else if (document.all) {
        eval("window.document.all['box" + i + "'].style.visibility = 'hidden'")
        }
}

}

function restore() { 
  if (NN) {
        location.href = location.href; 
  }
}