var fDesc=new Array();
fDesc[0] = "This is a program for the preparation of structural and fire resistance calculations to BS5950. Ensure individual tabs are completed in turn, including Job Details and then select Calculate to display a summary output of resulting Design Criteria. Input data may be saved as a parameter file for retrieval at a later date or the results may be saved as a read-only text file.";

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 = '';
	}
}