function getElementsByClass(searchClass, node, tag)
{
	var classElements = new Array();
	if(node == null)
	{
		node = document;
	}
	if(tag == null)
	{
		tag = '*';
	}
	var els = node.getElementsByTagName(tag);
	var elsLen = els.length;
	var pattern = new RegExp("(^|\\s)"+searchClass+"(\\s|$)");
	for(i=0, j=0; i<elsLen; i++)
	{
		if(pattern.test(els[i].className))
		{
			classElements[j] = els[i];
			j++;
		}
	}
	return classElements;
}

function enableTooltips()
{
	var links, i, h;
	if(!document.getElementById || !document.getElementsByTagName)
	{
		return;
	}
	
	h=document.createElement("span");
	h.id="btc";
	h.setAttribute("id","btc");
	h.style.position="absolute";
	document.getElementsByTagName("body")[0].appendChild(h);
	
	// Main menu tooltips
	links=getElementsByClass("bubble_blue");
	for(i=0;i<links.length;i++)
	{
	  Prepare(links[i], "blue");
	}
	
	// Image/avatar tooltips
	links=getElementsByClass("bubble_pink");
	for(i=0;i<links.length;i++)
	{
	  Prepare(links[i], "pink");
	}
}

function Prepare(el, colour)
{
	var tooltip, t, b, s, l;
	t=el.getAttribute("title");
	
	if(t==null || t.length==0)
	{
		return;
	}
	
	// Explode the title to top and bottom sections
	var title = t.split("::");
	el.removeAttribute("title");
	cl=el.getAttribute("class");
	
	// Hack for stupid IE
	if(cl==null)
	{
		//cl = el.attributes['class'].nodeValue;
	}
	
	s=CreateEl("span","top");
	b=CreateEl("b","bottom");
	tooltip=CreateEl("span","tooltip_"+colour);

	s.appendChild(document.createTextNode(title[0]));	
	tooltip.appendChild(s);
	
	if((title[1]=='') || (title[1]==null))
	{
		b.appendChild(document.createTextNode(' '));
		tooltip.appendChild(b);
	}
	else
	{
		b.appendChild(document.createTextNode(title[1]));
		tooltip.appendChild(b);
	}
	
	setOpacity(tooltip);
	el.tooltip=tooltip;
	el.onmouseover=showTooltip;
	el.onmouseout=hideTooltip;
	el.onmousemove=Locate;
}

function showTooltip(e)
{
	document.getElementById("btc").appendChild(this.tooltip);
	Locate(e);
}

function hideTooltip(e)
{
	var d=document.getElementById("btc");
	if(d.childNodes.length>0)
	{
		d.removeChild(d.firstChild);
	}
}

function setOpacity(el)
{
	el.style.filter="alpha(opacity:95)";
	el.style.KHTMLOpacity="0.95";
	el.style.MozOpacity="0.95";
	el.style.opacity="0.95";
}

function CreateEl(t, c)
{
	var x=document.createElement(t);
	x.className=c;
	x.style.display="block";
	return(x);
}

function Locate(e)
{
	var posx=0,posy=0;
	if(e==null) e=window.event;
	if(e.pageX || e.pageY)
	{
		posx=e.pageX; posy=e.pageY;
	}
	else if(e.clientX || e.clientY)
	{
	  if(document.documentElement.scrollTop)
		{
	    posx=e.clientX+document.documentElement.scrollLeft;
	    posy=e.clientY+document.documentElement.scrollTop;
	  }
	  else
		{
	    posx=e.clientX+document.body.scrollLeft;
	    posy=e.clientY+document.body.scrollTop;
	  }
	}
	document.getElementById("btc").style.top=(posy+10)+"px";
	document.getElementById("btc").style.left=(posx-20)+"px";
}