// caches all images used on each page
// images and highlighted captions for menu
var menu_cache_img=Array();
var menu_cache_img_on=Array();
menu_cache_img[1]=new Image();
menu_cache_img[1].src="http://absolutist.com/i/but_arcade.gif";
menu_cache_img_on[1]=new Image();
menu_cache_img_on[1].src="http://absolutist.com/i/but_arcade_on.gif";
menu_cache_img[2]=new Image();
menu_cache_img[2].src="http://absolutist.com/i/but_puzzle.gif";
menu_cache_img_on[2]=new Image();
menu_cache_img_on[2].src="http://absolutist.com/i/but_puzzle_on.gif";
menu_cache_img[3]=new Image();
menu_cache_img[3].src="http://absolutist.com/i/but_kids.gif";
menu_cache_img_on[3]=new Image();
menu_cache_img_on[3].src="http://absolutist.com/i/but_kids_on.gif";
menu_cache_img[4]=new Image();
menu_cache_img[4].src="http://absolutist.com/i/but_online.gif";
menu_cache_img_on[4]=new Image();
menu_cache_img_on[4].src="http://absolutist.com/i/but_online_on.gif";
menu_cache_img[5]=new Image();
menu_cache_img[5].src="http://absolutist.com/i/but_support.gif";
menu_cache_img_on[5]=new Image();
menu_cache_img_on[5].src="http://absolutist.com/i/but_support_on.gif";
// tabs for all platforms
var tab_cache_img=Array();
var tab_cache_img_on=Array();
tab_cache_img[1]=new Image();
tab_cache_img[1].src="http://absolutist.com/i/tab_w.gif";
tab_cache_img_on[1]=new Image();
tab_cache_img_on[1].src="http://absolutist.com/i/tab_w_on.gif";
tab_cache_img[2]=new Image();
tab_cache_img[2].src="http://absolutist.com/i/tab_p.gif";
tab_cache_img_on[2]=new Image();
tab_cache_img_on[2].src="http://absolutist.com/i/but_tab_p_on.gif";
tab_cache_img[3]=new Image();
tab_cache_img[3].src="http://absolutist.com/i/tab_c.gif";
tab_cache_img_on[3]=new Image();
tab_cache_img_on[3].src="http://absolutist.com/i/tab_c_on.gif";
tab_cache_img[4]=new Image();
tab_cache_img[4].src="http://absolutist.com/i/tab_s.gif";
tab_cache_img_on[4]=new Image();
tab_cache_img_on[4].src="http://absolutist.com/i/tab_s_on.gif";
tab_cache_img[5]=new Image();
tab_cache_img[5].src="http://absolutist.com/i/tab_l.gif";
tab_cache_img_on[5]=new Image();
tab_cache_img_on[5].src="http://absolutist.com/i/tab_l_on.gif";
// images for download link
var dld_cache_img=new Image();
dld_cache_img.src="http://absolutist.com/i/b_down.gif";
var dld_cache_img_on=new Image();
dld_cache_img_on.src="http://absolutist.com/i/b_down_on.gif";
// images for regiser link
var reg_cache_img=new Image();
reg_cache_img.src="http://absolutist.com/i/b_reg.gif";
var reg_cache_img_on=new Image();
reg_cache_img_on.src="http://absolutist.com/i/b_reg_on.gif";
var old_menu="";
// images for subscription submit button
var sub_cache_img=new Image();
sub_cache_img.src="http://absolutist.com/i/but_sub.gif";
var sub_cache_img_on=new Image();
sub_cache_img_on.src="http://absolutist.com/i/but_sub_on.gif";

// retrieves browser type
var AgntUsr=navigator.userAgent.toLowerCase();
var NavYes=AgntUsr.indexOf('mozilla')!=-1&&AgntUsr.indexOf('compatible')==-1?1:0;
var ExpYes=AgntUsr.indexOf('msie')!=-1?1:0;

// if the browser supports the Document Object Model
var dom = (document.getElementById)? true : false;
// if the browser is Internet Explorer 4
var ie4 = (document.all && !dom)? true : false;

var old_menu_num=0;
var old_caption="";
var old_parent="";

// sets the position of menu's image which is highlighted (caption)
function set_menu_caption_pos(caption,elemIdParent)
{
	var posX = relPosX(elemIdParent);
	var posY = relPosY(elemIdParent);
	if (dom)
	{
		document.getElementById(caption).style.left = posX;
	}
	else if (ie4)
	{
		document.all[caption].style.left = posX;
	}
}

// sets the position of the menu in order of current active
// (highlighted) menu image
// elemId - id of menu
// elemIdParent - id of menu active image
// caption - id of image contains highlighted menu caption only
// offsetX - menu offset by X defined in the array (menu_def.js)
function setPosition(elemId,elemIdParent,caption,offsetX)
{
	var posX = relPosX(elemIdParent);
	var posY = relPosY(elemIdParent);
	set_menu_caption_pos(caption,elemIdParent);
	if (dom)
	{
		document.getElementById(elemId).style.left = posX+offsetX;
		document.getElementById(elemId).style.top = posY;
	}
	else if (ie4)
	{
		if (NavYes)
		{
			document.all[elemId].style.left = (posX-415)*1.8+offsetX;
			document.all[elemId].style.top = posY;
		}
		else
		{
			document.all[elemId].style.left = posX+offsetX;
			document.all[elemId].style.top = posY;
		}
	}
}

// shows appropriate menu and highlighted image with menu caption
// for current menu item
function showElem(menu_num,elemIdParent,caption)
{
    if (!menu_num)
        menu_num=old_menu_num;
    if (!caption)
        caption=old_caption;
    if (!elemIdParent)
        elemIdParent=old_parent;
    old_menu_num=menu_num;
    old_caption=caption;
    old_parent=elemIdParent;
    var offsetX=menu_array[menu_num-1][menu_array[menu_num-1].length-3];
	setPosition("menu",elemIdParent,caption,offsetX);
	if (dom)
	{
		document.getElementById("menu").style.visibility = "visible";
		document.getElementById(caption).style.visibility = "visible";
		old_menu="menu";
	}
	else if (ie4)
	{
		if (old_menu&&(old_menu!="menu"))
            document.all[old_menu].style.visibility = "hidden";
		document.all["menu"].style.visibility = "visible";
		document.all[caption].style.visibility = "visible";
		old_menu="menu";
	}
}

// hides menu and highlighted image with menu caption
function hideElem(caption)
{
    if (!caption)
        caption=old_caption;
	if (dom)
	{
		var elem = document.getElementById("menu");
		if (elem)
			elem.style.visibility = "hidden";
		var caption = document.getElementById(caption);
        if (caption)
            caption.style.visibility = "hidden";
	}
	else if (ie4)
    {
        document.all["menu"].style.visibility = "hidden";
		document.all[caption].style.visibility = "hidden";
    }
}

// returns the absolute X position of element (id) which is transfered
// as parameter
function relPosX(which)
{
    	var elem = (dom)? document.getElementById(which) : document.all[which];
    	var pos = elem.offsetLeft;
    	while (elem.offsetParent != null)
		{
      		elem = elem.offsetParent;
      		pos += elem.offsetLeft;
      		if (elem.tagName == 'BODY') break;
    	}
		return pos;
}

// returns the absolute Y position of element (id) which is transfered
// as parameter
function relPosY(which)
{
    	var elem = (dom)? document.getElementById(which) : document.all[which];
    	var pos = elem.offsetTop;
    	while (elem.offsetParent != null)
		{
      		elem = elem.offsetParent;
      		pos += elem.offsetTop;
      		if (elem.tagName == 'BODY') break;
    	}
		return pos;
}

// changes src for image "obj" (is id) image to "img_src"
function change_image(obj,img_src)
{
	if (dom)
		document.getElementById(obj).src=img_src;
	else if (ie4)
		document.all[obj].src=img_src;
}

// writes "Enter your e-mail" into subscription field if no value was
// entered into this field after onBlur event happend
function check_subscribe()
{
	var subs_field = (dom)?document.getElementById("email"):document.all["email"];
	if (subs_field.value=="") subs_field.value="Enter your e-mail";
	else if (subs_field.value=="Enter your e-mail") subs_field.value="";
}

// fills menu by items in order of menu_num
// all menu items are defined in the menu_def.js file
function fill_popup(menu_num)
{
    // retrieves menu objects by their ids
    if (dom)
    {
        var menu=document.getElementById("menu");
        var popup=document.getElementById("popup");
    }
    else
    {
        var menu=document.all["menu"];
        var popup=document.all["popup"];
    }
    // hides DIV block (id=="menu") which contains the table (id=="popup")
    menu.style.visibility="hidden";
    // clears content of the table which describes menu content
    popup.innerHTML="";
    // forms menu content for current highlighted menu item
    // menu_array defined in the menu_def.js file
    var HTML='<table width="'+menu_array[menu_num-1][menu_array[menu_num-1].length-2]+'" height="10" cellspacing="0" cellpadding="0" bgcolor="#E2F8FE" class="popup"><tr><td width="1" bgcolor="#C9DDE4"><img src="http://absolutist.com/i/sp.gif" width="1"></td><td colspan="2"><img src="http://absolutist.com/i/sp.gif" height="'+menu_array[menu_num-1][menu_array[menu_num-1].length-1]+'"></td><td width="1" bgcolor="#C9DDE4"><img src="http://absolutist.com/i/sp.gif" width="1"></td></tr>';
    for (i=0; i<menu_array[menu_num-1].length-3; i++)
    {
        HTML+='<tr style="cursor: hand" onclick="document.location='+"'";
        HTML+=menu_array[menu_num-1][i][1];
        HTML+="'";
        HTML+='" onmouseover="bgColor=';
        HTML+="'#A9DFE1'";
        HTML+='" onmouseout="bgColor=';
        HTML+="'#E2F8FE'";
        HTML+='"><td width="1" bgcolor="#C9DDE4"><img src="http://absolutist.com/i/sp.gif" width="1"></td><td><img src="http://absolutist.com/i/bullet.gif" width="20" height="14"></td><td>';
        HTML+=menu_array[menu_num-1][i][0];
        HTML+='</td><td width="1" bgcolor="#C9DDE4"><img src="http://absolutist.com/i/sp.gif" width="1"></td></tr>';
    }
    popup.innerHTML=HTML+"</table>";
}

function jump() {
    if (dom) {
        var quick=document.getElementById("quick");
    } else {
        var quick=document.all["quick"];
    }
    if (quick.options[quick.selectedIndex].value) {
	document.location = quick.options[quick.selectedIndex].value;
    }
}