/*** This js file is used to open and close dropdown menus in the leftnav ***/

function swapClass(){ //v1.4 by PVII

	var i, x, tB, j = 0, tA = new Array(), arg = swapClass.arguments;
	
	if (document.getElementsByTagName)
	{
		for (i = 4; i < arg.length; i++)
		{
			tB = document.getElementsByTagName(arg[i]);
			for (x = 0; x < tB.length; x++)
			{
				tA[j] = tB[x];
				j++;
			}
		}
		for (i = 0; i < tA.length; i++)
		{
			if (tA[i].className)
			{
				if (tA[i].id == arg[1])
				{
					if (arg[0] == 1)
					{
						tA[i].className = (tA[i].className == arg[3]) ? arg[2] : arg[3];
					}
					else
					{
						tA[i].className = arg[2];
					}
				}
				/*
				else if (arg[0] == 1 && arg[1] == 'none')
				{
					if (tA[i].className == arg[2] || tA[i].className == arg[3])
					{
						tA[i].className = (tA[i].className == arg[3]) ? arg[2] : arg[3];
					}
				}
				else if (tA[i].className == arg[2])
				{
					tA[i].className = arg[3];
				}
				*/
			}
		}
	}
}