function SDMenu(id) {
	if (!document.getElementById || !document.getElementsByTagName)
		return false;
	this.menu = document.getElementById(id);
	this.submenus = this.menu.getElementsByTagName("div");
	this.remember = true;
	this.speed = 3;
	this.markCurrent = true;
	this.oneSmOnly = false;
}
SDMenu.prototype.init = function() {
	var mainInstance = this;
	for (var i = 0; i < this.submenus.length; i++) {
		this.submenus[i].getElementsByTagName("a")[0].onclick = function() {
		    // replace "a" with "span"
		    //alert(this.parentNode.parentNode.id);
		    //alert(this.id);
			mainInstance.toggleMenu(this.parentNode.parentNode);
			//mainInstance.toggleMenu(this.parentNode);
		};
	}	
	if (this.markCurrent) {
		var links = this.menu.getElementsByTagName("a");
		for (var i = 0; i < links.length; i++)
		    if(links[i].id!=null)
			    if (links[i].href == document.location.href) {
				    links[i].className = "current";
				    break;
			    }
	}
	if (this.remember) {
		var regex = new RegExp("gerotools_" + encodeURIComponent(this.menu.id) + "=([01]+)");
		var match = regex.exec(document.cookie);
		if (match) {
			var states = match[1].split("");
			for (var i = 0; i < states.length; i++)
				this.submenus[i].className = (states[i] == 0 ? "collapsed" : "");
		}
	}
};
SDMenu.prototype.toggleMenu = function(submenu) {
	if (submenu.className == "collapsed")
		this.expandMenu(submenu);
	//else 
		//this.collapseMenu(submenu);
};
SDMenu.prototype.expandMenu = function(submenu) {
	var fullHeight = submenu.getElementsByTagName("span")[0].offsetHeight;
	var links = submenu.getElementsByTagName("a");
	for (var i = 0; i < links.length; i++)
	    if(links[i].id!=null)
		    fullHeight += links[i].offsetHeight;
	var moveBy = Math.round(this.speed * links.length);
	var mainInstance = this;
    submenu.className = "";
	mainInstance.memorize();
//	var intId = setInterval(function() {
//		var curHeight = submenu.offsetHeight;
//		var newHeight = curHeight + moveBy;
//		if (newHeight < fullHeight) {
//			submenu.style.height = newHeight + "px";
//			alert("sds");
//		}
//		else {
//		    alert("sds2");
//			clearInterval(intId);
//			submenu.style.height = "";
//			submenu.className = "";
//			mainInstance.memorize();
//		}
//	}, 30);
	this.collapseOthers(submenu);
};
SDMenu.prototype.collapseMenu = function(submenu) {
    //deleteCookie(document.cookie = "gerotools_" + encodeURIComponent(this.menu.id),'/','');
	var minHeight = submenu.getElementsByTagName("span")[0].offsetHeight;
	var moveBy = Math.round(this.speed * submenu.getElementsByTagName("a").length);
	var mainInstance = this;
	submenu.className = "collapsed";
	mainInstance.memorize();
//	var intId = setInterval(function() {
//		var curHeight = submenu.offsetHeight;
//		var newHeight = curHeight - moveBy;
//		if (newHeight > minHeight) {
//			submenu.style.height = newHeight + "px";
//		}
//		else {
//			clearInterval(intId);
//			submenu.style.height = "";
//			submenu.className = "collapsed";
//			mainInstance.memorize();
//		}
//	}, 30);
};
SDMenu.prototype.collapseOthers = function(submenu) {
	if (this.oneSmOnly) {
		for (var i = 0; i < this.submenus.length; i++)
			if (this.submenus[i] != submenu && this.submenus[i].className != "collapsed")
				this.collapseMenu(this.submenus[i]);
	}
};
SDMenu.prototype.expandAll = function() {
	var oldOneSmOnly = this.oneSmOnly;
	this.oneSmOnly = false;
	for (var i = 0; i < this.submenus.length; i++)
		if (this.submenus[i].className == "collapsed")
			this.expandMenu(this.submenus[i]);
	this.oneSmOnly = oldOneSmOnly;
};
SDMenu.prototype.collapseAll = function() {
	for (var i = 0; i < this.submenus.length; i++)
		if (this.submenus[i].className != "collapsed")
			this.collapseMenu(this.submenus[i]);
};
SDMenu.prototype.memorize = function() {
	if (this.remember) {
		var states = new Array();
		for (var i = 0; i < this.submenus.length; i++)
			states.push(this.submenus[i].className == "collapsed" ? 0 : 1);
		var d = new Date();
		d.setTime(d.getTime() + (30 * 24 * 60 * 60 * 1000));
		//with liftime of cookie
		//document.cookie = "gerotools_" + encodeURIComponent(this.menu.id) + "=" + states.join("") + "; expires=" + d.toGMTString() + "; path=/";
		//with max-age = web-browsing session
		//document.cookie = "gerotools_" + encodeURIComponent(this.menu.id) + "=" + states.join("") + "; version=" + document.lastModified + "; max-age=" + (60*60*24*365) + "; path=/";
		document.cookie = "gerotools_" + encodeURIComponent(this.menu.id) + "=" + states.join("") + "; version=" + document.lastModified + "; path=/";
	}
};


/*
function deleteCookie( name, path, domain ) {
if ( Get_Cookie( name ) ) document.cookie = name + "=" +
( ( path ) ? ";path=" + path : "") +
( ( domain ) ? ";domain=" + domain : "" ) +
";expires=Thu, 01-Jan-1970 00:00:01 GMT";
}


//remove item (string or number) from an array
function removeItem(originalArray, itemToRemove) {
	var j = 0;
	while (j < originalArray.length) {
	//	alert(originalArray[j]);
		if (originalArray[j] == itemToRemove) {
			originalArray.splice(j, 1);
	} else { j++; }
}
	//	assert('hi');
return originalArray;
}
*/

/*

var myMenu = new SDMenu("main_menu"); // ID of the menu element
// Default values...
myMenu.speed = 3;                     // Menu sliding speed (1 - 5 recomended)
myMenu.remember = true;               // Store menu states (expanded or collapsed) in cookie and restore later
myMenu.oneSmOnly = false;             // One expanded submenu at a time
myMenu.markCurrent = true;            // Mark current link / page (link.href == location.href)

myMenu.init();

// Additional methods...
var firstSubmenu = myMenu.submenus[0];
myMenu.expandMenu(firstSubmenu);      // Expand a submenu
myMenu.collapseMenu(firstSubmenu);    // Collapse a menu
myMenu.toggleMenu(firstSubmenu);      // Expand if collapsed and collapse if expanded

myMenu.expandAll();                   // Expand all submenus
myMenu.collapseAll();                 // Collapse all submenus
*/