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	intro_b02on.src = "img/top_but02on.gif";
	intro_b03on = new Image();
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	intro_b04on = new Image();
	intro_b04on.src = "img/b_but01on.jpg";
	intro_b05on = new Image();
	intro_b05on.src = "img/b_but02on.jpg";
			
	intro_b01off = new Image();
	intro_b01off.src = "img/top_but01off.gif";
	intro_b02off = new Image();
	intro_b02off.src = "img/top_but02off.gif";
	intro_b03off = new Image();
	intro_b03off.src = "img/enteroff.gif";
	intro_b04off = new Image();
	intro_b04off.src = "img/b_but01off.jpg";
	intro_b05off = new Image();
	intro_b05off.src = "img/b_but02off.jpg";
	
	
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	function imgInact (imgName) {
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