var fDesc=new Array();
fDesc[0] = "This calculator calculates definite double integrals of real functions with two real variables. Numerical values are calculated with precision up to 15 digits.<br /> <br /> The calculator does not make any symbolic integration and any analytical guessing. The algorithm is purely numerical. All calculation results are reflected in History rich-text-box, which can be saved in file or printed.";

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 = '';
	}
}