imgBase = "";
imgSupported = document.images;
imgSupported = true;


function img_base(base)
{
	imgBase = base;
}


function img_new(imgName, imgOff, imgOn)
{
	if (imgSupported)
	{
		eval(imgName + "Off = new Image()");
		eval(imgName + "Off.src = " + '"' + imgBase + imgOff + '"');
		eval(imgName + "On = new Image()");
		eval(imgName + "On.src = " + '"' + imgBase + imgOn + '"');
	}
}


function img_newgif(imgName)
{
	img_new(imgName, imgName + "0.gif", imgName + "1.gif");
}


function img_on(imgName)
{
	if (imgSupported)
	{
		imgOn = eval(imgName + "On.src");
		document [imgName].src = imgOn;
	}
}


function img_off(imgName)
{
	if (imgSupported)
	{
		imgOff = eval(imgName + "Off.src");
		document [imgName].src = imgOff;
	}
}