function show_requirements()
{
		jrequirementsWindow = window.open('requirements.html', 'iwin', 'width=800, height=500, resizable=yes, scrollbars=yes');
		jrequirementsWindow.focus();
}

function show_nca_rates()
{
		jncaratesWindow = window.open('nca_rates.html', 'iwin', 'width=800, height=500, resizable=yes, scrollbars=yes');
		jncaratesWindow.focus();
}