function swp(obj,attr,val1,val2)
{
	if(obj.getAttribute(attr)==val2.toLowerCase())
	{
		obj.setAttribute(attr,val1);
	}
	else
	{
		obj.setAttribute(attr,val2);	
	}
}

function swc(obj,val1,val2)
{
	if(obj.className==val2.toLowerCase())
	{
		obj.className=val1;
	}
	else
	{
		obj.className=val2;
	}
}