function findObj(n, d) {  
  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=findObj(n,d.layers[i].document); 
  if(!x && document.getElementById) x=document.getElementById(n); return x; 
} 

// funkce pro menu

function lightup(imgName)
 {
   if (document.images)
    {
      imgOn=eval(imgName + "on.src");
      findObj(imgName).src= imgOn;
    }
 }

function turnoff(imgName)
 {
   if (document.images)
    {
      imgOff=eval(imgName + "off.src");
        findObj(imgName).src= imgOff;
    }
 }



function zavri(secNum){
    secNum.className="off"
}

function openNahled(soubor) {
	window.open("data/krize/velke/"+soubor+".jpg","nahledKrize","width=300, height=300");
	return false;
}