function CheckCh (e) {
	var ev = e ? e : event;
	var key = ev.which ? ev.which : ev.keyCode;
	
	switch (key){
	case 8:  break;
	case 48: break;
	case 49: break;
	case 50: break;
	case 51: break;
	case 52: break;
	case 53: break;
	case 54: break;
	case 55: break;
	case 56: break;
	case 57: break;
	case 37: break;
	case 38: break;
	case 39: break;
	case 40: break;
	default: 
	ev.returnValue = false;
	if (ev.preventDefault) ev.preventDefault ();
	return false;
	}
	
}

function popupPicts(pictURL, title) {
	theURL = "php/popup.php?pictURL="+pictURL+"&title="+title;
	new_win = window.open(theURL, 'popup', 'width=200, height=200, location=no, menubar=no, scrollbars=yes, resizable=no, toolbar=no, statusbar=yes');
	return;
}

function trim(str){

 while (str.substring(0,1) == ' ')
  str = str.substring(1, str.length);

 while (str.substring(str.length-1, str.length) == ' ')
  str = str.substring(0,str.length-1);

 return str;
}

/*áttunés*/
function megrendelo(divName) {
	if (document.layers) document.layers[''+divName+''].visibility = "show"
	else if (document.all) document.all[''+divName+''].style.visibility = "visible"
	else if (document.getElementById) document.getElementById(''+divName+'').style.visibility = "visible"
	opacity(divName, 10, 100, 1000);
}
function opacity(id, opacStart, opacEnd, millisec) {

	var speed = Math.round(millisec / 100);
	var timer = 0;

	if(opacStart > opacEnd) {
		for(i = opacStart; i >= opacEnd; i--) {
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
		}
	} else if(opacStart < opacEnd) {
		for(i = opacStart; i <= opacEnd; i++)
			{
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
		}
	}
}
function changeOpac(opacity, id) {
	var object = document.getElementById(id).style; 
	object.opacity = (opacity / 100);
	object.MozOpacity = (opacity / 100);
	object.KhtmlOpacity = (opacity / 100);
	object.filter = "alpha(opacity=" + opacity + ")";
	if(opacity==0) {
		object.visibility = "hidden";
	}
}