function getCheckedValue(radioObj) {
	if(!radioObj)
		return "";
	var radioLength = radioObj.length;
	if(radioLength == undefined)
		if(radioObj.checked)
			return radioObj.value;
		else
			return "";
	for(var i = 0; i < radioLength; i++) {
		if(radioObj[i].checked) {
			return radioObj[i].value;
		}
	}
	return "";
}


function waist2hipratio()
{
	document.write("<form id=frmWaist2Hip>");
	document.write("Waist Circumference:<br><input type=text id=waist size=10> cm");
	document.write("<br>");
	document.write("Hip Circumference:<br><input type=text id=hip size=10> cm");
	document.write("<br>");
	document.write("<input type=button name=submit value='Calculate Waist to Hip Ratio' onClick='calculatewaist2hip(this.form)' >");
	document.write("<br><br>");
	document.write("Your Waist to Hip Ratio:<br><input type=text id=waist2hipratio size=10>");
	document.write("</form>");

}

function calculatewaist2hip(form)
{
	var strWaist=form.waist.value;
	var strHip=form.hip.value;
	var waist2hipratio;

	waist2hipratio=strWaist/strHip;
	form.waist2hipratio.value=waist2hipratio.toPrecision(3);

}
waist2hipratio();