// Append a new function to the window.onload event
function AddLoadEvent(func)
{
	var oldOnLoad = window.onload;
	if (typeof window.onload != 'function')
	{
		window.onload = func;
	}
	else
	{
		window.onload = function() 
		{
			oldOnLoad();
			func();
		}
	}	
}

// Some shortcut functions to check browser compatibility
function GEBI()
{
	return DoesFunctionExist(document.getElementById);
}
function GEBTN()
{
	return DoesFunctionExist(document.getElementsByTagName);
}

function DoesFunctionExist(func)
{
	if (!func)
	{
		return false;
	}
	else
	{
		return true;
	}
}