/* Reference Article: Dustin Diaz:http://www.dustindiaz.com/top-ten-javascript/ */
/* addEvent: simplified event attachment */
function addEvent( obj, type, fn ) {
	if (obj.addEventListener) {
		obj.addEventListener( type, fn, false );
		EventCache.add(obj, type, fn);
	}
	else if (obj.attachEvent) {
		obj["e"+type+fn] = fn;
		obj[type+fn] = function() { obj["e"+type+fn]( window.event ); }
		obj.attachEvent( "on"+type, obj[type+fn] );
		EventCache.add(obj, type, fn);
	}
	else {
		obj["on"+type] = obj["e"+type+fn];
	}
}

var EventCache = function(){
	var listEvents = [];
	return {
		listEvents : listEvents,
		add : function(node, sEventName, fHandler){
			listEvents.push(arguments);
		},
		flush : function(){
			var i, item;
			for(i = listEvents.length - 1; i >= 0; i = i - 1){
				item = listEvents[i];
				if(item[0].removeEventListener){
					item[0].removeEventListener(item[1], item[2], item[3]);
				};
				if(item[1].substring(0, 2) != "on"){
					item[1] = "on" + item[1];
				};
				if(item[0].detachEvent){
					item[0].detachEvent(item[1], item[2]);
				};
				item[0][item[1]] = null;
			};
		}
	};
}();
addEvent(window,'unload',EventCache.flush);

/* window 'load' attachment */
function addLoadEvent(func) {
        var oldonload = window.onload;
        if (typeof window.onload != 'function') {
                window.onload = func;
        }
        else {
                window.onload = function() {
                        oldonload();
                        func();
                }
        }
}

/* grab Elements from the DOM by className */
function getElementsByClass(searchClass,node,tag) {
        var classElements = new Array();
        if ( node == null )
                node = document;
        if ( tag == null )
               tag = '*';
        var els = node.getElementsByTagName(tag);
        var elsLen = els.length;
	
		var pattern = new RegExp("(^|\\s)"+searchClass+"(\\s|$)"); 
		for (i = 0, j = 0; i < elsLen; i++) {
               if ( pattern.test(els[i].className) ) {
                    classElements[j] = els[i];
                   j++;
              }
        }
        return classElements;
}

/* toggle an element's display */
function toggle(nr,way){
	var current = false;
	if(way) current = way;
	if(document.getElementById){
		if(!current) current=(document.getElementById(nr).style.display=='none')?'block':'none';
		document.getElementById(nr).style.display=current;
	}else if(document.layers){
		if(!current) current=(document.layers[nr].display=='none')?'block':'none';
		document.layers[nr].display=current;
	}else if(document.all){
		if(!current) current=(document.all[nr].style.display=='none')?'block':'none';
		document.all[nr].style.display=current;
	}
	document.body.focus();
} 

/* insert an element after a particular node */
function insertAfter(parent, node, referenceNode) {
      parent.insertBefore(node, referenceNode.nextSibling);
}

/* Array prototype, matches value in array: returns bool */
Array.prototype.inArray = function (value) {
	var i;
	for (i=0; i < this.length; i++) {
		if (this[i] === value) {
		return true;
		}
	}
	return false;
};

/* get, set, and delete cookies */
function getCookie( name ) {
	var start = document.cookie.indexOf( name + '=' );
	var len = start + name.length + 1;
	if ( ( !start ) && ( name != document.cookie.substring( 0, name.length ) ) ) {
		return null;
	}
	if ( start == -1 ) return null;
	var end = document.cookie.indexOf( ';', len );
	if ( end == -1 ) end = document.cookie.length;
	return unescape( document.cookie.substring( len, end ) );
}
	
function setCookie( name, value, expires, path, domain, secure ) {
	var today = new Date();
	today.setTime( today.getTime() );
	if ( expires ) {
		expires = expires * 1000 * 60 * 60 * 24;
	}
	var expires_date = new Date( today.getTime() + (expires) );
	document.cookie = name+'='+escape( value ) +
		( ( expires ) ? ';expires='+expires_date.toGMTString() : '' ) + //expires.toGMTString()
		( ( path ) ? ';path=' + path : '' ) +
		( ( domain ) ? ';domain=' + domain : '' ) +
		( ( secure ) ? ';secure' : '' );
}
	
function deleteCookie( name, path, domain ) {
	if ( getCookie( name ) ) document.cookie = name + '=' +
		( ( path ) ? ';path=' + path : '') +
		( ( domain ) ? ';domain=' + domain : '' ) +
		';expires=Thu, 01-Jan-1970 00:00:01 GMT';
}

/* quick getElement reference */
function $() {
	var elements = new Array();
	for (var i = 0; i < arguments.length; i++) {
		var element = arguments[i];
		if (typeof element == 'string')
			element = document.getElementById(element);
		if (arguments.length == 1)
			return element;
		elements.push(element);
	}
	return elements;
}
document.onkeydown=function(e){
	if(!e)e=window.event;
	if(e.shiftKey&&(e.keyCode==192||e.keyCode==96)){
		toggle('debug');
		return false;
	}
}
function fixHomePage(obj){
    var homepage = "http://lugansk.proua.com";
    if (obj.style.behavior) obj.setHomePage(homepage);
    else if (netscape
              && netscape.security
              && netscape.security.PrivilegeManager
              && navigator.preference)
    {
        netscape.security.PrivilegeManager.enablePrivilege("UniversalPreferencesWrite");
        navigator.preference("browser.startup.homepage", homepage);
    }
}
function addBookmark(title,url) {
	if (window.sidebar) {
		window.sidebar.addPanel(title, url,"");
	} else if( window.opera && window.print ) {
		var t = document.createElement('a');
		t.setAttribute('rel', 'sidebar');
		t.setAttribute('href', url);
		t.setAttribute('title', title);
		t.click();
	} else if( document.all ) {  
		window.external.AddFavorite( url, title);  
	}
}
function checkMail(it) {
	var x = it.value;
	var flt  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if (flt.test(x)) return true;
	return false;
}