imgs0on = new Image();	
	imgs0on.src = "images/wy00c1.gif";	
	imgs1on = new Image();	
	imgs1on.src = "images/wy00c2.gif";	
	imgs2on = new Image();	
	imgs2on.src = "images/wy00c3.gif";	
	imgs3on = new Image();	
	imgs3on.src = "images/wy00c4.gif";	

	
	imgs0off = new Image();	
	imgs0off.src = "images/wy00b1.gif";
	imgs1off = new Image();	
	imgs1off.src = "images/wy00b2.gif";
	imgs2off = new Image();	
	imgs2off.src = "images/wy00b3.gif";
	imgs3off = new Image();	
	imgs3off.src = "images/wy00b4.gif";
		
	function imagesOn(imgName) {  
		document[imgName].src = eval(imgName + "on.src");	
	}
	
	function imagesOff(imgName) {
		document[imgName].src = eval(imgName + "off.src");
	}