// Handles rollover images for NN3+ and IE4+
var loaded = new Array();
var F_menuIsEntered = false;
var F_menuIsCreated = false;
var F_menuAgt = navigator.userAgent.toLowerCase();
var F_menuIsGecko = (F_menuAgt.indexOf('gecko') != -1);
var F_menuIsOpera = (F_menuAgt.indexOf('opera') != -1);
var F_menuSubmenu;
var F_menuTable = new Array();

function F_loadRollover(image,imageName,menu) {
        if (image && image.src &&
                (null == image.out || typeof(image.out) == typeof(void(0)))) {
                s = image.src;
                image.out = new Image();
                image.out.src = s;
                image.over = new Image();
                if (imageName.lastIndexOf('/') >= 0 || imageName.lastIndexOf('\\') >= 0) {
                        s = imageName;
                } else {
                        i = s.lastIndexOf('/');
                        if (i<0) i = s.lastIndexOf('\\');
                        if (i<0) { s = imageName; }
                        else     { s = s.substring(0,i+1) + imageName; }
                }
                image.over.src = s;
                image.menu = menu;
                loaded[image.name] = image;
        }
}
function F_roll(imageName,over) {
        if (document.images) {
        if (over) { imageObject = "over"; }
        else      { imageObject = "out"; }
        image = loaded[imageName];
        if (image) {
                ref = eval("image."+imageObject);
                if (ref) image.src = eval("image."+imageObject+".src");
                else image.src = '';

                ref = eval("image.menu");
                if (ref)
                {
                        if (over)
                                F_menuOpen(image, image.menu);
                        else
                                F_menuClose();
                }
        }
        if (window.event)
                window.event.cancelBubble = true;
        }
}
 
function F_menufindLeft(b)
{
  v = b.offsetLeft;
  if (b.offsetParent)
     v += F_menufindLeft(b.offsetParent);
  return v;
}

function F_menufindTop(b)
{
  v = b.offsetTop;
  if (b.offsetParent)
     v += F_menufindTop(b.offsetParent);
  return v;
}

function F_menuOpen(o, a)
{
        var menu;

        if (F_menuIsGecko)
                menu = document.getElementById(a[1] + 'LYR');
        else if (document.layers)
                menu = document.layers[a[1] + 'LYR'];
        else
                menu = eval(a[1] + 'LYR');
        
        if (F_menuSubmenu)
        {
                if (F_menuSubmenu != menu)
                {
                        if (document.layers)
                                F_menuSubmenu.visibility = 'hidden';
                        else
                                F_menuSubmenu.style.visibility = 'hidden';
                }
                else
                {
                        F_menuIsCreated = true;
                        return;
                }
        }

        F_menuSubmenu = menu;

        var horizontal = a[2];

        if (document.layers)
        {
                F_menuSubmenu.document.open();
                F_menuSubmenu.document.write(F_menuTable[a[1]]);
                F_menuSubmenu.document.close();
                F_menuSubmenu.top = document.layers[o.name].pageY + (horizontal ? a[0] : 0);
                F_menuSubmenu.left = document.layers[o.name].pageX + (horizontal ? 0 : a[0]);
                F_menuSubmenu.visibility = 'visible';
        }
        else
        {
                var menutop = F_menufindTop(o);
                var menuleft = F_menufindLeft(o);

                if (horizontal)
                        menutop += a[0];
                else
                        menuleft += a[0];

                F_menuSubmenu.style.top=menutop;
                F_menuSubmenu.style.left=menuleft;
                F_menuSubmenu.style.visibility = 'visible';
        }

        F_menuIsCreated = true;
}

function F_menuClose()
{
        F_menuIsCreated = false;
        setTimeout('F_checkMenuClose()', 100);
}

function F_checkMenuClose()
{
        if (!F_menuIsEntered && !F_menuIsCreated && F_menuSubmenu)
        {
                if (document.layers)
                        F_menuSubmenu.visibility = 'hidden';
                else
                        F_menuSubmenu.style.visibility = 'hidden';
                F_menuSubmenu = 0;
        }
}

function F_menu(a)
{
        var navname = a[0];
        var s;

        s = '<table onmouseover=F_menumouseover(this) onmouseout=F_menumouseout() border="0" cellspacing="0" cellpadding="0">';
        var i = 1;
        while (i < a.length)
        {
                var link = a[i];
                var target = '';
                var p = link.indexOf(' target=');
                if (p != -1)
                {
                        target = link.substr(p + 8);
                        link = link.substr(0, p);
                }
                s += '<tr><td width="100%">';
                s += '<a href="' + link + '"';
                if (target.length)
                        s += ' target="' + target + '"';
                if (a[i + 2].length)
                        s += ' onMouseOver="F_rolls(\'' + navname + 's' + i + '\',1)" onMouseOut="F_rolls(\'' + navname + 's' + i + '\',0)"';
                s += '>';
                s += '<img border="0" src="' + a[i + 1] + '"';
                if (a[i + 2].length)
                        s += ' name=\'' + navname + 's' + i + '\' onLoad="F_loadRollover(this,\'' + a[i + 2] + '\',0)"';
                s += '>';
                s += '</a></td></tr>';
                i += 3;
        }
        s += '</table>';

        if (F_menuIsGecko)
        {
                document.writeln("<DIV ID='" + navname + "LYR' STYLE='Z-Index:5'>");
                document.writeln(s);
                document.writeln("</DIV>");
        }
        else if (F_menuIsOpera)
        {
                document.writeln("<DIV ID='" + navname + "LYR'>");
                document.writeln(s);
                document.writeln("</DIV>");
        }
        else if (document.all)
        {
                document.writeln("<DIV ID='" + navname + "LYR' STYLE='Z-Index:5'>");
                document.writeln(s);
                document.writeln("</DIV>");
        }
        else if (document.layers)
        {
                document.writeln('<LAYER id="' + navname + 'LYR" visibility=hidden onmouseover="F_menumouseover()" onmouseout="F_menumouseout()"></LAYER>');
                F_menuTable[navname] = s;
        }
}

function F_menumouseover()
{
        F_menuIsEntered = true;
        F_menuIsCreated = false;
}

function F_menumouseout()
{
        F_menuIsEntered = false;
        setTimeout('F_checkMenuClose()', 100);
}

function F_rolls(imageName,over)
{
        if (over)
                F_menumouseover();
        else
                F_menumouseout();

        F_roll(imageName,over);
}