function toggleLayer( whichLayer )
{
  var elem, vis;
  if( document.getElementById ) // this is the way the standards work
    elem = document.getElementById( whichLayer );
  else if( document.all ) // this is the way old msie versions work
      elem = document.all[whichLayer];
  else if( document.layers ) // this is the way nn4 works
    elem = document.layers[whichLayer];
  vis = elem.style;
  // if the style.display value is blank we try to figure it out here
  if(vis.display==''&&elem.offsetWidth!=undefined&&elem.offsetHeight!=undefined)
    vis.display = (elem.offsetWidth!=0&&elem.offsetHeight!=0)?'block':'none';
  vis.display = (vis.display==''||vis.display=='block')?'none':'block';
}

function popUp(URL) {
day = new Date();
id = day.getTime();
eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=620,height=450,left = 330,top = 287');");
}
function popUp2(URL) {
day = new Date();
id = day.getTime();
eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=0,width=760,height=600,left = 330,top = 287');");
}

function justNumInput(fld, evt) {
  	var code = evt.keyCode;
  	if (!evt) { //IE
    	evt = window.event;
  	} else if (!evt.keyCode) { //Netscape
    	code = evt.which;
  	}
  	if(code == 8) return true;  // BKPS -> OK
  	if(code < 48 || code > 58) return false;
  	
  	return true;
}


function isEnterKey(evt) {
	var keyCode = evt.keyCode;
	if (!keyCode) keyCode = evt.which;
	return (keyCode == 13)
}

function enterKeyFormSubmitter(evt){
	if (!evt) evt = window.event;
	var target = (evt.srcElement ? evt.srcElement : evt.target)
	if(isEnterKey(evt)) target.form.submit();
}


function enterKeyFunctionCall(evt, fgv){
	if (!evt) evt = window.event;
	if(isEnterKey(evt)) fgv();
} 

function chksrchfld() {
	if (document.formsrch.searchtext.value=="Keresés") document.formsrch.searchtext.value = "";
}
function chksrchfld2() {
	if (document.formsrch.searchtext.value=="") document.formsrch.searchtext.value = "Keresés";
}
function doSearch() {
	document.formsrch.submit();
}