but1on = new Image();	but1on.src = "/_images/but11.gif";
	but1off = new Image();	but1off.src = "/_images/but10.gif";
	but2on = new Image();	but2on.src = "/_images/but21.gif";
	but2off = new Image();	but2off.src = "/_images/but20.gif";
	but3on = new Image();	but3on.src = "/_images/but31.gif";
	but3off = new Image();	but3off.src = "/_images/but30.gif";
	but4on = new Image();	but4on.src = "/_images/but41.gif";
	but4off = new Image();	but4off.src = "/_images/but40.gif";

	function butON(imgName)
	{
		imgOn = eval(imgName + "on.src");
		document [imgName].src = imgOn;
	}

	function butOFF(imgName)
	{
		imgOff = eval(imgName + "off.src");
		document [imgName].src = imgOff;
	}