function getElementsByClassName(className, node)
{
	var children = null, returnArr = [], i;
	
	if (node == undefined)
	{
		node = document.body;
	}
	else if (typeof node != "object")
	{
		return([]);
	}
	
	var classes = node.className.split(" ");
	for (var i = 0; i < classes.length; i++)
	{
		if (classes[i] == className)
		{
			returnArr[returnArr.length] = node;
		}
	}
		
	children = (node.children) ? node.children : node.childNodes;
	for (i = 0; i < children.length; i++)
	{
		returnArr = returnArr.concat(getElementsByClassName(className, children[i]));
	}
	
	return(returnArr);
}