var siteMenu;
function init_sidemenu(section){
	var sections = section.split("_");

	// Change the top menu images
/*	var topmenu = document.getElementById('topMenu');
	var topmenu_img = topmenu.getElementsByTagName("img");
	for (var i = 0; i < topmenu_img.length; i++) {
	    var lang = "c";
	    var src_name = topmenu_img[i].src;
	    if (src_name) {
	        if (topmenu_img[i].src.indexOf('_gb.gif') >= 0) {
	            lang = "gb";
	        } else if (topmenu_img[i].src.indexOf('_e.gif') >= 0) {
	            lang = "e";
	        }
	    }
		if (topmenu_img[i].id.indexOf('t_' + sections[0]) >= 0) {
		    topmenu_img[i].src = "/home/images/topmenu/" + sections[0] + "_on_" + lang + ".gif";
		    //alert(topmenu_img[i].src);
		} else if (topmenu_img[i].id.indexOf('t_') >= 0) {
			var menu_id = topmenu_img[i].id;
			menu_id = menu_id.replace("t_", "");
			topmenu_img[i].src = "/home/images/topmenu/" + menu_id + "_off_" + lang + ".gif";
			//alert(topmenu_img[i].src);
        }
	}*/

	// Initiate the side menu
	siteMenu = new SDMenu("leftNav");
	siteMenu.init();
	if ((section == 'home') || (section == 'about') || (section == 'contact')) {
		siteMenu.collapseAll();
		var menu = document.getElementById(section);
		var links = menu.getElementsByTagName("a");
		markCurrent(menu, links, section);

    } else {
        var expanded = false;
    	for (var i = 0; i < siteMenu.submenus.length; i++) {
	        //if ((siteMenu.submenus[i].id == section) || (siteMenu.submenus[i].id == sections[0])) {
    	    if (siteMenu.submenus[i].id == section) {
				siteMenu.submenus[i].className = "current";
				var submenu_items = siteMenu.submenus[i].getElementsByTagName("span");

				for (var j = 0; j < submenu_items.length; j++) {
					var links = submenu_items[j].getElementsByTagName("a");
					markCurrent(submenu_items[j], links, section);
				}

				siteMenu.expandMenu(siteMenu.submenus[i]);
				expanded = true;
			}//if

        } //for
        if (!expanded) {
            for (var i = 0; i < siteMenu.submenus.length; i++) {
                if (siteMenu.submenus[i].id == sections[0]) {
                    siteMenu.submenus[i].className = "current";
                    var submenu_items = siteMenu.submenus[i].getElementsByTagName("span");

                    for (var j = 0; j < submenu_items.length; j++) {
                        var links = submenu_items[j].getElementsByTagName("a");
                        markCurrent(submenu_items[j], links, section);
                    }

                    siteMenu.expandMenu(siteMenu.submenus[i]);
                    expanded = true;
                } //if
            } //for
        }
	};
}

function markCurrent(submenu_item, links, section) {
    for (var m = 0; m < links.length; m++) {
        var href = document.location.href;
        var href2 = href;
	    if (href.indexOf("?") >=0) {
		    href2 = href.substr(0, href.indexOf("?"));
	    }
	    if ((links[m].href == href) || (links[m].href == href2)) {
		    links[m].className = "current";
		    // Change the image
		    var img = links[m].getElementsByTagName('img');
		    if (img.length > 0) {
			    img[0].src ="/home/images/leftmenu_arrow.gif";
			    submenu_item.className = submenu_item.className + " current " ;
			    //submenu_items[j].className = " current";
		    }
		}
		//alert(submenu_item.id + ", " + section);
		if ((submenu_item.id != null) && (submenu_item.id == section)) {
		    var sublinks = submenu_item.getElementsByTagName("a");
		    sublinks[0].className = "current";
		    var img = sublinks[0].getElementsByTagName('img');
		    if (img.length > 0) {
		        img[0].src = "/home/images/leftmenu_arrow.gif";
		    }
		    submenu_item.className = submenu_item.className + " current ";
	    }
    }
    //if (submenu_items[j].id == section) {
	    //submenu_items[j].className = "current";
    //}
}

function SDMenu(id) {
	if (!document.getElementById || !document.getElementsByTagName)
		return false;
	this.menu = document.getElementById(id);
	this.submenus = this.menu.getElementsByTagName("div");
	this.remember = false;
	this.speed = 10;
	this.useUpeed = false;
	this.markCurrent = true;
	this.oneSmOnly = true;
}
SDMenu.prototype.init = function() {
	var mainInstance = this;
	for (var i = 0; i < this.submenus.length; i++)
		this.submenus[i].getElementsByTagName("span")[0].onclick = function() {
			mainInstance.toggleMenu(this.parentNode);
		};
	if (this.markCurrent) {
		var links = this.menu.getElementsByTagName("a");
		for (var i = 0; i < links.length; i++)
			if (links[i].href == document.location.href) {
				if (links[i].className=="menulink"){
					links[i].className = "current";
				}
				break;
			}
	}
	if (this.remember) {
		var regex = new RegExp("sdmenu_" + 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 sections = submenu.id.split("_");

	// Change the image of the parent menu	
	for (var i = 0; i < siteMenu.submenus.length; i++) {
		if (siteMenu.submenus[i].id == sections[0]) {
			var spansParent = siteMenu.submenus[i].getElementsByTagName('span');
			if (spansParent.length > 0) {
				var img = spansParent[0].getElementsByTagName('img');
				img[0].src ="/home/images/leftmenu_dot2.gif";
			}
		}
	}
	// Change the image of this submenu
	var spans = submenu.getElementsByTagName('span');
	if (spans.length > 0) {
		var img = spans[0].getElementsByTagName('img');
		img[0].src ="/home/images/leftmenu_dot2.gif";
	}
	
	// Expand the menu and Set the current link as 'current' class
	var fullHeight = submenu.getElementsByTagName("span")[0].offsetHeight;
	var links = submenu.getElementsByTagName("a");
	for (var i = 0; i < links.length; i++) {
		fullHeight += links[i].offsetHeight;
		if (this.markCurrent) {
			//if (i == 0) {
			//	links[i].className = "current";
			//}
			if (links[i].href == document.location.href) {
				links[i].className = "current";
			}
		}
	}
	
	var moveBy = Math.round(this.speed * links.length);
	
	var mainInstance = this;
	var intId = setInterval(function() {
		var curHeight = submenu.offsetHeight;
		var newHeight = curHeight + moveBy;
		if (newHeight < fullHeight)
			submenu.style.height = newHeight + "px";
		else {
			clearInterval(intId);
			submenu.style.height = "";
			submenu.className = "";
			mainInstance.memorize();
		}
	}, 30);
	this.collapseOthers(submenu);
};
SDMenu.prototype.collapseMenu = function(submenu) {
	// Change the image of the parent menu
	var sections = submenu.id.split("_");
	for (var i = 0; i < siteMenu.submenus.length; i++) {
		if (siteMenu.submenus[i].id == sections[0]) {
			var spansParent = siteMenu.submenus[i].getElementsByTagName('span');
			if (spansParent.length > 0) {
				var img = spansParent[0].getElementsByTagName('img');
			}
		}
	}
	// Change the image of this submenu
	var spans = submenu.getElementsByTagName('span');
	if (spans.length > 0) {
		var img = spans[0].getElementsByTagName('img');
		img[0].src ="/home/images/leftmenu_dot1.gif";
	}
	
	var minHeight = submenu.getElementsByTagName("span")[0].offsetHeight;
	var links = submenu.getElementsByTagName("a");
	for (var i = 0; i < links.length; i++) {
		if (this.markCurrent) {
			links[i].className = "menulink";
		}
	}
	var moveBy = Math.round(this.speed * submenu.getElementsByTagName("a").length);
	var mainInstance = this;
	var a = submenu.offsetHeight - moveBy;
	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++) {
			//alert(this.submenus[i].id + ', ' + submenu.id);
			//if (href.indexOf("?") >=0) {
			//if (this.submenus[i] != submenu && this.submenus[i].className != "collapsed")
			if ((submenu.id.indexOf(this.submenus[i].id) <0)  && (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));
		document.cookie = "sdmenu_" + encodeURIComponent(this.menu.id) + "=" + states.join("") + "; expires=" + d.toGMTString() + "; path=/";
	}
};