if ((screen.width == 800) && (screen.height == 600))
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else if ((screen.width == 1024) && (screen.height == 768))
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else if ((screen.width == 1152) && (screen.height == 864))
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else if ((screen.width == 1280) && (screen.height == 1024))
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else
	document.write("<link rel='stylesheet' type='text/css' href='./css/styles800.css'>")