var fDesc=new Array();
fDesc[0] = "Almost all color transparency films, color print papers and color negative films use a multilayer subtractive colour construction similar to that shown above. <br /> <br /> The uppermost layer contains a yellow dye whose density is proportional to the amount of blue light, the middle layer has a magenta dye with density proportional to green light, and the lowermost layer contains a cyan dye with density proportional to the red light during exposure. <br /> <br /> A yellow filter layer prevents blue and ultra-violet light from reaching the two lower layers";

function tShowHide(id, show)
{
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	if ((s.innerHTML.length<=212 || show==1) && show!=2)
	{
		s.innerHTML = fDesc[id];
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	{
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}