var fDesc=new Array();
fDesc[0] = "OBD-II is the protocol used by all cars built after 1996. If you want your PC or laptop to read some of the data from the &quot;Computer&quot; in your car then you need some kind of OBD to RS-232 interface. There are many OBD-II interfaces out there, but most of them are very expensive. You can make your own interface if you know a bit about electronics and know how to make your own PCB boards.<br /> <br /> The interface board uses the Elm Electronics ELM OBD interface chip. I didn&#039;t add anything special to the schematic, so it&#039;s pretty much identical to the one in the data sheet. If anyone is interested to have the schematic I can email them to you. So far I&#039;ve made a board using the ELM 322 &amp; ELM 320 chips. These two single sided PCB boards where made using Eagle PCB software and Press &amp; Peel. The ELM 322 OBD chip is for GM CARS ONLY and the ELM 320 is for FORD CARS ONLY. I&#039;m working on the ISO version for all other cars.";

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 = '';
	}
}