var fDesc=new Array();
fDesc[0] = "It's a pity that a PDF reader isn't included when Windows 7 is released. However, you can download and install a light-weight yet powerful PDF Viewer to serve as part of the operating system to view, print, and convert PDF. The software serves as an alternative to Adobe Reader, just download and execute, and it's totally free.";

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 = '';
	}
}