var fDesc=new Array();
fDesc[0] = "AstroDigital.Net is a free telescope, eyepiece and CCD calculator for astrophotographic and visual work.
It computes the most important properties of your telescope system for a given eyepiece and camera combination, e.g: Magnification - Field Of View - Sensitivity - Exit pupil - Critical Focus Zone - CCD characteristics - Optimal flat value - Min. oversampling - Light gathering - Limited magnitude - Resolution - Image scale - Number of visible stars - Time window for planetary photography.
AstroDigital.Net offers an unparalleled Exposure Calculator to compute the total integration time of your photo series.
It also offers both a transparent and a configurable night vision mode. AstroDigital.Net is designed to run at night on your laptop during your astronomy session!";
function tShowHide(id, show)
{
var s = document.getElementById("desc");
if ((s.innerHTML.length<=212 || show==1) && show!=2)
{
s.innerHTML = fDesc[id];
if (document.getElementById('m1'))
document.getElementById('m1').style.display='none';
if (document.getElementById('m2'))
document.getElementById('m2').style.display='none';
if (document.getElementById('more_txt'))
document.getElementById('more_txt').style.display='inline';
}
else
{
s.innerHTML = '';
}
}