/*
 * $Id: menu.js.php,v 1.1 2006/07/20 18:25:54 manfred Exp $
 */

var userAgent = navigator.userAgent.toLowerCase();
var is_safari = ((userAgent.indexOf("safari") != -1) || (navigator.vendor == "Apple Computer, Inc."));
var is_firefox = (userAgent.indexOf("firefox") != -1);
var is_mac = (userAgent.indexOf("macintosh") != -1);
var is_konqueror = (userAgent.indexOf('konqueror') != -1);

var menucurrent = null;
var menutimer = null;
var menuoffsetx = 0;
var menuoffsety = 0;
var menuclickbar = true;

var top_offset = 82;

function MenuInit() {
	if (is_safari) {
		menuoffsetx = 0;
		menuoffsety = -94;
		menuclickbar = false;
	}
	if (is_konqueror) {
         menuclickbar = false;
    }
    // max 20 hauptmenus
    for ( c = 1; c < 20; c++ ) {
        if ( document.getElementById("tab_" + c) != null ) {
	        document.getElementById("tab_" + c).onmouseover = HoverTabOver;
	        document.getElementById("tab_" + c).onmouseout = HoverTabOut;
	        document.getElementById("tab_" + c + "_menu").onmouseover = HoverMenuOver;
            if (  document.getElementById("tab_" + c + "_menu") != null ) {
	            document.getElementById("tab_" + c + "_menu").onmouseout = HoverMenuOut;
	            document.getElementById("tab_" + c + "_menu").style.display = "none";
	            document.getElementById("tab_" + c + "_menu").style.position = "absolute";
            }
	        if (menuclickbar) {
		        var table = document.getElementById("tab_" + c + "_menu");
		        var rows = table.getElementsByTagName("tr");
		        for (var i = 0; i < rows.length; i++) {
			        cell = rows[i].getElementsByTagName("td");
			        cell[0].onclick = ClickBar;
		        }
	        }
        }
    }
}

function HoverTabOver() {
	if (menutimer != null) {
			clearTimeout(menutimer);
    }
	if ( menucurrent != null ) { 
        if  (menucurrent != this.id) {
		    MenuClose(menucurrent+"_menu");
        }
    }
	MenuOpen(this.id);
	menucurrent = this.id;
	this.className = "topbar_tab_active";
	document.getElementById(this.id).className = "menu-top-hlit";
    document.getElementById(this.id+"_link").className = "topmenu-w";
}

function HoverTabOut() {
	menutimer = setTimeout("MenuClose('"+this.id+"_menu');",500);
}

function HoverMenuOver() {
	if (menutimer != null)
		clearTimeout(menutimer);
}

function HoverMenuOut() {
	menutimer = setTimeout("MenuClose('"+this.id+"');",500);
}

function MenuOpen(idname) {
	menu = document.getElementById(idname+"_menu");
	tab = document.getElementById(idname);
	menu.style.display = "";
	menu.style.left = (getElementPosX(tab)+menuoffsetx)+"px";
	menu.style.top = (getElementPosY(tab)+top_offset+menuoffsety)+"px";
}

function MenuClose(idname) {
	document.getElementById(idname).style.display = "none";
    if ( menucurrent != null ) {
	    document.getElementById(menucurrent).className = "menu-top";
        document.getElementById(menucurrent+"_link").className = "topmenu";
    }
}

function ClickBar() {
	links = this.getElementsByTagName("a");
	if (links.length > 0 && links[0].target == '' )
		window.location = links[0].href;
}

function getElementPosX(object) {
	var curleft = 0;
	if (object.offsetParent) {
		while (object.offsetParent) {
			curleft += object.offsetLeft
			object = object.offsetParent;
		}
	}
	else if (object.x)
		curleft += object.x;
	return curleft;
}

function getElementPosY(object) {
	var curtop = 0;
	if (object.offsetParent) {
		while (object.offsetParent) {
			curtop += object.offsetTop
			object = object.offsetParent;
		}
	}
	else if (object.y)
		curtop += object.y;
	return curtop;
}