function initTabs()
{
	var sets = document.getElementsByTagName("ul");
	for (var i = 0; i < sets.length; i++)
	{
		if (sets[i].className.indexOf("tabset") != -1)
		{
			if (sets[i].className.indexOf("ul-next-prev") != -1)
			{
				sets[i]._active = 1;
			}
			var tabs = [];
			var links = sets[i].getElementsByTagName("a");
			for (var j = 0; j < links.length; j++)
			{
				if (links[j].className.indexOf("tab") != -1)
				{
					tabs.push(links[j]);
					links[j].tabs = tabs;
					var c = document.getElementById(links[j].href.substr(links[j].href.indexOf("#") + 1));

					//reset all tabs on start
					if (c) {
						if (links[j].className.indexOf("active") != -1) c.style.display = "block";
						else c.style.display = "none";
					}

					links[j].onclick = function ()
					{
						var c = document.getElementById(this.href.substr(this.href.indexOf("#") + 1));
						if (c)
						{
							//reset all tabs before change
							for (var i = 0; i < this.tabs.length; i++)
							{
								document.getElementById(this.tabs[i].href.substr(this.tabs[i].href.indexOf("#") + 1)).style.display = "none";
								document.getElementById("tab0").style.display = "none";
								this.tabs[i].className = this.tabs[i].className.replace("active", "");
							}
							this.className += " active";
							c.style.display = "block";
							return false;
						}
					}
				}
				if(sets[i]._active)
				{
					if (links[j].className.indexOf("next") != -1)
					{
						links[j].onclick = function ()
						{
							var _parent = this.parentNode.parentNode;
							if(_parent._links)
							{
								_parent._active += 1;
								if(_parent._active > _parent._links.length - 1)
								{
									_parent._active = 1;
								}
								if(_parent._links[_parent._active])
								{
									_parent._links[_parent._active].onclick();
								}
							}
							return false;
						}
					}				
					if (links[j].className.indexOf("prev") != -1)
					{
						links[j].onclick = function ()
						{
							var _parent = this.parentNode.parentNode;
							if(_parent._links)
							{
								_parent._active -= 1;
								if(_parent._active <= 0)
								{
									_parent._active = _parent._links.length - 2;
								}
								if(_parent._links[_parent._active])
								{
									_parent._links[_parent._active].onclick();
								}
							}
							return false;
						}
					}				
				}
			}

			if(sets[i]._active)
			{
				sets[i]._links = links;
			}

		}
	}
}

function setActive(){
	var act_num = 0;
	if (window.location.toString().indexOf('#tab')!= -1){
		act_num = window.location.toString().substr(window.location.toString().indexOf('#tab')+4);
		act_num = parseDigits(act_num);
	}
	var _ul = document.getElementById('tabset_ul');
	if (_ul && act_num) {
		var _a = _ul.getElementsByTagName('a');
		var _default = document.getElementById('tab0');
		if (_a.length){
			for (var i=0; i<_a.length; i++){
				_a[i].className = _a[i].className.replace('active', '');
			}
			for (var i=0; i<_a.length; i++){
				if (act_num == i+1){ 
					_a[i].className += ' active';
					_default.style.display = "none";
				}
			}			
		}
	}
	initTabs();
}
function parseDigits(_value)
{
	return _value.replace(/[\D]/g,"");
}
if (window.addEventListener) window.addEventListener("load", setActive, false);
else if (window.attachEvent) window.attachEvent("onload", setActive);