function noEnter(e) {
	var key;
	if(window.event)
		key = window.event.keyCode; //IE
		else
			key = e.which; //firefox
	if(key == 13)
		return false;
		else
			return true;
	}
	
	
	
function OVM(m, y, n, page) /* open virtual magazine */ {
	URL = '/virtual.php?m='+m+'&y='+y+'&n='+n;
	if (page != null) {
		URL += "&Page="+page;
		}
	window.open(
		URL,
		null,
    	'height=480,width=640,status=yes,toolbar=no,menubar=no,location=no,resizable=yes'
		);
	return false;
	}		
	

function ShowCatalogue(i,params) /* show some media */ {
	URL = '/k/'+i+'/index.html';
	if (params != null) 
		URL += "?"+params;
	window.open(
		URL,
		null,
    	'height=600,width=800,status=yes,toolbar=no,menubar=no,location=no,resizable=yes'
		);
	return false;
	}	

	
function addBookmark(title,url) {
	if (window.sidebar) { 
		window.sidebar.addPanel(title, url,""); 
		} else if (document.all && window.external) {
			window.external.AddFavorite( url, title);
			} else if (window.opera && window.print) {
				return true;
				}
	}
	
	
function toggleVis(IDShow, IDOn, IDOff) {
	var e = document.getElementById(IDShow);
	if (e) {
		if (e.style.display == 'none') {
			e.style.display = 'block';
			} else { // e.style.display == 'inline'
				e.style.display = 'none';
				}
		
		e = document.getElementById(IDOn);			
		if (e) e.style.display = 'block';
		e = document.getElementById(IDOff);			
		if (e) e.style.display = 'none';
		}
	return false;
	}

function ShowHide(obj) {
	var el = document.getElementById(obj);
	el.style.display = (el.style.display != 'none' ? 'none' : '' );
}