function SetCookie(cookieName,cookieValue,nDays) {
 var today = new Date();
 var expire = new Date();
 if (nDays==null || nDays==0) nDays=1;
 expire.setTime(today.getTime() + 3600000*24*nDays);
 document.cookie = cookieName+"="+escape(cookieValue)
                 + ";expires="+expire.toGMTString();
}

function showdiv(obrazek,event) {
	document.getElementById('wokno').style.left = 0 + 'px';
	document.getElementById('wokno').style.top = event.clientY - document.body.scrollTop - 50 + 'px';
	/*document.getElementById('wokno').style.top = event.clientY -  20 + document.body.scrollTop + 'px';*/
	document.getElementById('wokno').style.visibility="visible";
	document.getElementById('woknoimg').style.visibility="visible";
	document.getElementById('woknoimg').src= obrazek;
}

function hidediv() {
	document.getElementById('wokno').style.visibility="hidden";
	document.getElementById('woknoimg').src= "/img/preloader.gif";
	document.getElementById('woknoimg').style.visibility="hidden";
}

function OpenJSLWindow(url, jmeno, w, h) 
{
    Fokus = window.open(url, jmeno,'resizable=0,top=20,left=20,menubar=0,width=' + w + ',height=' + h);
    Fokus.focus()
}

function popup(url,width,height) 
{
 var left   = (screen.width  - width)/2;
 var top    = (screen.height - height)/2;
 var params = 'width='+width+', height='+height;
 params += ', top='+top+', left='+left;
 params += ', directories=no';
 params += ', location=no';
 params += ', menubar=no';
 params += ', resizable=no';
 params += ', scrollbars=no';
 params += ', status=no';
 params += ', toolbar=no';
 newwin=window.open(url,'windowname5', params);
 if (window.focus) {newwin.focus()}
 return false;
}