/*
 * These handlers are used to add and remove an image in one place, when
 * another image is rolled over.  Both the image rolled over, and the image to be shown
 * must have name attributes, and the shown image must be the name of the roll over image
 * with 'Img' appended
 */

function swapOverImage(imgelem)
{
	var targetid = imgelem.name+ "Img";
	var element = document.images[targetid];
	if ( element != null && element.style.display=="none" )
	{
		element.style.display="inline";
	}
}

function swapOutImage(imgelem)
{
	var targetid = imgelem.name+ "Img";
	var element = document.images[targetid];
	if ( element != null && element.style.display=="inline" )
	{
		element.style.display="none";
	}
}