function more_cats()
{
  els1 = document.getElementById('hu1'); // more 
  els2 = document.getElementById('hu2');
  els3 = document.getElementById('hu3'); // all categories
  els4 = document.getElementById('less_cats');
  if (els3.style.display == "block") {
  } else {
    els1.style.display = "none";
    els2.style.display = "none";
    els3.style.display = "block";
	els4.style.display = "block";
  }
  return false;
}

function less_cats()
{
  els1 = document.getElementById('hu1'); // more 
  els2 = document.getElementById('hu2');
  els3 = document.getElementById('hu3'); // all categories
  els4 = document.getElementById('less_cats');
  if (els3.style.display == "none") {
  } else {
    els1.style.display = "block";
    els2.style.display = "block";
    els3.style.display = "none";
	els4.style.display = "none";
  }
  return false;
}

function show_more()
{
	els = document.getElementsByClassName('hu');
	for(i=0;i<els.length;i++){
		els[i].style.display = 'block';
	}
	$('view_more_link').style.display = 'none';
}

document.getElementsByClassName = function(className, parentElement, strict) 
{
  	var retArr = new Array();
  	var children = ($(parentElement) || document.body).getElementsByTagName('*');
	var strict = isset(strict) ? strict : true;
	
  	for(i=0;i<children.length;i++) {
  		if((strict&&children[i].className == className) || (!strict&&children[i].className.indexOf(className)!=-1))
			retArr.push(children[i]);
  	}

  	return retArr;
}

function $() {
  var elements = new Array();
  for (var i = 0; i < arguments.length; i++){
    var element = arguments[i];
    if (typeof element == 'string')
      element = document.getElementById(element);
    if (arguments.length == 1)
      return element;
    elements.push(element);
  }
  return elements;
}

function isset(v)
{
	if (v === undefined)
		return false;
	
	return true;
}

window.onerror = null;

tooltip = {

	/* ������ �������� */

	attr_name: "tooltip", // ������������ ������������ tooltip'��� ��������
	blank_text: "Opens in a new window", // ����� ��� ������ � target="_blank"
	newline_entity: "  ", // ������� ������ ������ (""), ���� �� ������ ������������ � tooltip'�� ���������������; ����� ������, �� ������� ��� ������ ��� �������, ������� ����� ���������� �� ������� ������
	max_width: 500, // ������������ ������ tooltip'� � ��������; �������� ��� ��������, ���� ������ ������ ���� ��������������
	delay: 0, // �������� ��� ������ tooltip'� � �������������
	
	/* ����� �������� */

	t: document.createElement("DIV"),
	c: null,
	g: false,

	m: function(e){
		if (tooltip.g){
			oCanvas = document.getElementsByTagName(
			(document.compatMode && document.compatMode == "CSS1Compat") ? "HTML" : "BODY"
			)[0];
			x = window.event ? event.clientX + oCanvas.scrollLeft : e.pageX;
			y = window.event ? event.clientY + oCanvas.scrollTop : e.pageY;
			tooltip.a(x, y);
		}
	},

	d: function(){
		tooltip.t.setAttribute("id", "tooltip");
		//tooltip.t.style.filter = "alpha(opacity=85)"; // buggy in ie5.0
		document.body.appendChild(tooltip.t);
		a = document.all ? document.all : document.getElementsByTagName("*");
		aLength = a.length;
		for (var i = 0; i < aLength; i++){

			//if (a[i].tagName == "A" || a[i].tagName == "BUTTON" || (a[i].tagName == "INPUT" && (a[i].type == "submit" || a[i].type == "button" || a[i].type == "reset"))) a[i].onclick = self.focus;

			if (!a[i]) continue;

			tooltip_title = a[i].getAttribute("title"); // returns form object if IE & name="title"; then IE crashes; so...
			tooltip_rel = a[i].getAttribute("rel");
			
			if (tooltip_title && typeof tooltip_title != "string") tooltip_title = "";

			if(tooltip_rel == 'tooltip'){
			tooltip_alt = a[i].getAttribute("alt");
			//tooltip_blank = a[i].getAttribute("target") && a[i].getAttribute("target") == "_blank" && tooltip.blank_text;
			tooltip_blank = false;
			if (tooltip_title || tooltip_blank){
				a[i].setAttribute(tooltip.attr_name, tooltip_blank ? (tooltip_title ? tooltip_title + " " + tooltip.blank_text : tooltip.blank_text) : tooltip_title);
				if (a[i].getAttribute(tooltip.attr_name)){
					a[i].removeAttribute("title");
					if (tooltip_alt && a[i].complete) a[i].removeAttribute("alt");
					tooltip.l(a[i], "mouseover", tooltip.s);
					tooltip.l(a[i], "mouseout", tooltip.h);
				}
			}else if (tooltip_alt && a[i].complete){
				a[i].setAttribute(tooltip.attr_name, tooltip_alt);
				if (a[i].getAttribute(tooltip.attr_name)){
					a[i].removeAttribute("alt");
					tooltip.l(a[i], "mouseover", tooltip.s);
					tooltip.l(a[i], "mouseout", tooltip.h);
				}
			}
			if (!a[i].getAttribute(tooltip.attr_name) && tooltip_blank){
				//
			}
			}
		}
		document.onmousemove = tooltip.m;
		window.onscroll = tooltip.h;
		tooltip.a(-99, -99);
	},

	s: function(e){
		tooltip.u();
		d = window.event ? window.event.srcElement : e.target;
		if (!d.getAttribute(tooltip.attr_name)) return;
		s = d.getAttribute(tooltip.attr_name);
		if (tooltip.newline_entity){
			s = s.replace(/\&/g,"&amp;");
			s = s.replace(/\</g,"&lt;");
			s = s.replace(/\>/g,"&gt;");
			s = s.replace(eval("/" + tooltip.newline_entity + "/g"), "<br />");
			tooltip.t.innerHTML = s;
		}else{
			if (tooltip.t.firstChild) tooltip.t.removeChild(tooltip.t.firstChild);
			tooltip.t.appendChild(document.createTextNode(s));
			//tooltip.t.innerText = s;
		}
		
		tooltip.c = setTimeout("tooltip.t.style.visibility = 'visible';", tooltip.delay);
		tooltip.g = true;
	},

	h: function(e){
		//tooltip.t.style.visibility = "hidden";
		if (!tooltip.newline_entity && tooltip.t.firstChild) tooltip.t.removeChild(tooltip.t.firstChild);
		clearTimeout(tooltip.c);
		tooltip.g = false;
		tooltip.a(-99, -99);
	},

	l: function(o, e, a){
		if (o.addEventListener) o.addEventListener(e, a, false); // was true--Opera 7b workaround!
		else if (o.attachEvent) o.attachEvent("on" + e, a);
			else return null;
	},

	a: function(x, y){
		oCanvas = document.getElementsByTagName(
		(document.compatMode && document.compatMode == "CSS1Compat") ? "HTML" : "BODY"
		)[0];
		
		w_width = oCanvas.clientWidth ? oCanvas.clientWidth + oCanvas.scrollLeft : window.innerWidth + window.pageXOffset;
		w_height = window.innerHeight ? window.innerHeight + window.pageYOffset : oCanvas.clientHeight + oCanvas.scrollTop; // should be vice verca since Opera 7 is crazy!

		tooltip.t.style.width = "auto";
		tooltip.t.style.width = ((tooltip.max_width) && (tooltip.t.offsetWidth > tooltip.max_width)) ? tooltip.max_width + "px" : "auto";

		
		t_width = tooltip.t.offsetWidth;
		t_height = tooltip.t.offsetHeight;

		tooltip.t.style.left = x + 8 + "px";
		tooltip.t.style.top = y + 8 + "px";
		
		if (x + t_width > w_width) tooltip.t.style.left = w_width - t_width + "px";
		if (y + t_height > w_height) tooltip.t.style.top = w_height - t_height + "px";
	},
	
	u: function(){
		oCanvas = document.getElementsByTagName(
		(document.compatMode && document.compatMode == "CSS1Compat") ? "HTML" : "BODY"
		)[0];

		tooltip.t.style.width = ((tooltip.max_width) && (tooltip.t.offsetWidth > tooltip.max_width)) ? tooltip.max_width + "px" : "auto";
	
		t_width = tooltip.t.offsetWidth;
		t_height = tooltip.t.offsetHeight;
	}
}

var root = window.addEventListener || window.attachEvent ? window : document.addEventListener ? document : null;
if (root){
	if (root.addEventListener) root.addEventListener("load", tooltip.d, false);
	else if (root.attachEvent) root.attachEvent("onload", tooltip.d);
}


function homePage(o) {
	if(document.all && !window.opera) {
		// IE
		document.getElementById('makeHomepageLink').style.behavior='url(#default#homepage)';
		document.getElementById('makeHomepageLink').setHomePage('http://www.premierfirms.com');	
	}
	else {
		// non-IE browsers
		window.location.href="set_homepage.php";
	}
}