function orly(otazka) {
    return confirm(otazka);
}

function chgDelivery( dl )
{
	for( var i = 0; i < pyms.length; i++ )
	{
		var tmp = document.getElementById( 'pymid'+pyms[i] );
		tmp.disabled = true;
		//if( i == 0 )tmp.checked = true;
	}

	for( var i = 0; i < allrel.length; i++ )
	{
		if( allrel[i][0] == dl )
		{
			var tmp = document.getElementById( 'pymid'+allrel[i][1] );
			tmp.disabled = false;
			tmp.checked = true;
		}
	}
}


   function epsAction2del()
   {
        doi = document.getElementById("doi");
        if(doi) doi.value= "delete";
   }


//onkeypress="return numbersonly(this, event)"
function numbersonly(myfield, e, dec)
{
var key;
var keychar;

if (window.event)
   key = window.event.keyCode;
else if (e)
   key = e.which;
else
   return true;
keychar = String.fromCharCode(key);

if ((key==null) || (key==0) || (key==8) ||
    (key==9) || (key==13) || (key==27) )
   return true;

else if ((("0123456789").indexOf(keychar) > -1))
   return true;

else if (dec && (keychar == "."))
   {
   myfield.form.elements[dec].focus();
   return false;
   }
else
   return false;
}


function faq_change(a, id){
  if (id){

    var dd = document.getElementById('faqa' +id);
    if (dd) {
      dd.style.display = (dd.style.display == "") ? "block": "";
    }

  }
  return false;
}


function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}

function setProductOrderingByName(url)
{
	createCookie( 'PO', 'name', '30' );
	location.href = url;
	location.reload( true );
}

function setProductOrderingByPrice(url)
{
	createCookie( 'PO', 'price', '30' );
	location.href = url;
	location.reload( true );
}

/*
 function sendOnEnter_do(evt) {
	  var nbr;
	  var nbr = (window.event)?event.keyCode:evt.which;
	  if(nbr == 13) talktoServer();
	  return true;
  }

 function sendOnEnter_activate() {
 	  document.onkeydown= sendOnEnter_do;
 }
 */


function activateElement(emtid)
{
    var emt = document.getElementById(emtid);
    if(emt) {
        emt.select();
    }
    document.execCommand('Copy');
}