var uagent    = navigator.userAgent.toLowerCase();
var is_safari = ( (uagent.indexOf('safari') != -1) || (navigator.vendor == "Apple Computer, Inc.") );
var is_ie     = ( (uagent.indexOf('msie') != -1) && (!is_opera) && (!is_safari) && (!is_webtv) );
var is_ie4    = ( (is_ie) && (uagent.indexOf("msie 4.") != -1) );
var is_moz    = (navigator.product == 'Gecko');
var is_ns     = ( (uagent.indexOf('compatible') == -1) && (uagent.indexOf('mozilla') != -1) && (!is_opera) && (!is_webtv) && (!is_safari) );
var is_ns4    = ( (is_ns) && (parseInt(navigator.appVersion) == 4) );
var is_opera  = (uagent.indexOf('opera') != -1);
var is_kon    = (uagent.indexOf('konqueror') != -1);
var is_webtv  = (uagent.indexOf('webtv') != -1);

var is_win    =  ( (uagent.indexOf("win") != -1) || (uagent.indexOf("16bit") !=- 1) );
var is_mac    = ( (uagent.indexOf("mac") != -1) || (navigator.vendor == "Apple Computer, Inc.") );
var ua_vers   = parseInt(navigator.appVersion);


function change_form_value(id_name, id_value)
{
	idhan = get_id(id_name);

	idhan.value = id_value;
}

function change_div_value(id_name, id_value)
{

	if(!id_value) {
		id_value = " ";
	}

	idhan = get_id(id_name);

	idhan.innerHTML = id_value;
}

// +------------------------
// Article List funcs
// +------------------------

function add_article_list(type)
{
}

function clear_all_articles(type)
{

	// Clear cookie
	echo_setcookie(type, '', 1);

	// Delete HTML
	idness = get_id(type+"_div");
	idness.innerHTML = '';
}

function clear_single_article(type, id_int) 
{
	// Clear cookie

	art_array_2 = new Array();
	art_array = new Array();

	art_list = '';
	art_list = echo_getcookie(type);

	art_array = art_list.split(",");
	
	
	
	for(i = 0 ; i < art_array.length; i++) {
		if(art_array[i] != id_int && art_array[i] > 0)  {
			art_array_2[art_array_2.length] = art_array[i];
		}
	}

	echo_setcookie(type, art_array_2.join(","), 1);

	// Delete HTML
	idness = get_id(type+"_div_"+id_int);
	idness.innerHTML = '';
}

// +------------------------
// General Functions
// +------------------------

function get_id(id)
{
	itm = null;
	
	if(document.getElementById) {
		itm = document.getElementById(id);
	} else if(document.all) {
		itm = document.all[id];
	} else if(document.layers) {
		itm = document.layers[id];
	}

	return itm;
}

function get_opener_id(id)
{
	itm = null;

	if(opener.document.getElementById) {
		itm = opener.document.getElementById(id);
	} else if(opener.document.all) {
		itm = opener.document.all[id];
	} else if(opener.document.layers) {
		itm = opener.document.layers[id];
	}

	return itm;
}

function showhide(id)
{

	itm = get_id(id);
	
	if (itm.style.display == "none") {
		itm.style.display = "";
	} else {
		itm.style.display = "none";
	}
}

function echo_setcookie(name, value, forever)
{
	expire = '';

	if (forever) {
		expire = " expires=Wed, 1 Jan 2020 00:00:00 GMT;";
	}
	
	value = escape(value);
	
	document.cookie = "echo_" + name + "=" + value + "; path=/;" + expire;
}


function echo_getcookie(name)
{
	cook_name = "echo_" + name + '=';
	cook_loc  = document.cookie.indexOf(cook_name);
	
	if (cook_loc != -1) {
		cook_start = cook_loc + cook_name.length;
		cook_end   = document.cookie.indexOf(";", cook_start);
		
		if (cook_end == -1) {
			cook_end = document.cookie.length;
		}
		
		return unescape( document.cookie.substring(cook_start, cook_end) );
	}
	
	return null;
}

function show_popup(href, name, width, height)
{
	
	if(typeof height == "undefined") 
	{
		height="300";
	}
		
	var newWindow = window.open(href, name, "height=" + height + ",width=" + width + ",scrollbars=yes,toolbar=no,location=no");

	if(!newWindow) {
		return false;
	}

	return true;
}

function show_full_popup(href, name, width, height)
{
	
	if(typeof height == "undefined") 
	{
		height="300";
	}
		
	var newWindow = window.open(href, name, "height=" + height + ",width=" + width + ",scrollbars=yes,toolbar=yes,location=yes,resizable=yes,titlebar=yes,status=yes");

	if(!newWindow) {
		return false;
	}

	return true;
}


function switch_nav_div(div_id)
{	
	saved = new Array();
	clean = new Array();
	
	if(temp = echo_getcookie('stored_divs')) {
		saved = temp.split(",");
	}
	
	for(i = 0 ; i < saved.length; i++) {
		if(saved[i] != div_id && saved[i] != "")  {
			clean[clean.length] = saved[i];
		}
	}

	itm = get_id(div_id+"_div");
	
	if(itm.style.display == "none") {
		clean[clean.length] = div_id;
	}
	
	showhide(div_id + "_div");
	//showhide(div_id + "_open_img");
	//showhide(div_id + "_close_img");	
	
	echo_setcookie('stored_divs', clean.join(','), 1);
}