function addLoadEvent(func)
{
	var oldonload = window.onload;
	if(typeof window.onload!= 'function')
	{
		window.onload = func;
	}
	else
	{
		window.onload = function()
		{
			oldonload();
			func();
		}
	}
}

function prepareDropDowns()
{
	if(!document.getElementsByTagName) return false;
	if(!document.getElementById) return false;
	if(!document.getElementById("sidebar")) return false;
	var topic = document.getElementById("sidebar");
	var links = topic.getElementsByTagName("a");
	for(var i = 0; i < links.length; i++)
	{	
		links[i].onclick = function()
		{
			return operateDropDowns(this.getAttribute("title"));
		}
	}
}

function operateDropDowns(whichdiv)
{
	var dropper = document.getElementById(whichdiv);
	if(dropper.style.display == 'block')
	{
		dropper.style.display = 'none';	
	}
	else
	{
		dropper.style.display = 'block';
	}
	return false;
}

// Allows initial open div to function correctly on the first click
function initialDisplay()
{
	var service = document.getElementById("service");
	service.style.display = 'block';
}

addLoadEvent(prepareDropDowns);
addLoadEvent(initialDisplay);