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if (document.layers) {var NN4 = true;}
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if (document.all) {var IE = true;}
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function timeline_init() {
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	tl_1978.src='images/home_tier3_1978.jpg';
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	tl_1996.src='images/home_tier3_1996.jpg';
	tl_1999.src='images/home_tier3_1999.jpg';
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function toggleDiv(id){
	
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