function showCopyright()
{
	pad  = (document.layers) ? document.layers['copyright_over'] : document.getElementById('copyright_over');
	pad.style.display = "block";
}
function hideCopyright()
{
	pad  = (document.layers) ? document.layers['copyright_over'] : document.getElementById('copyright_over');
	pad.style.display = "none";
}