var fDesc=new Array();
fDesc[0] = "The software uses fetal biometric measurements of abdominal circumference, femur length and head circumference obtained from ultrasound to calculate the estimated fetal weight. The calculator is based on Campbell's (A) formula [1] and Hadlock's (H, A and F) formula [2], where: A = Abdominal circumference; F = Femur length; H = Head circumference";

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 = '';
	}
}