function mm2inch(mm) {
	return mm/25.4
}
function inch2mm(inches) {
	return inches*25.4
}
function ftinfrac2inch(ft,inch,fracnum,fracden) {
	ft=parseFloat(ft)
	inch=parseFloat(inch)
	fracnum=parseFloat(fracnum)
	fracden=parseFloat(fracden)
	if (isNaN(ft)) {
		ft=0
	}
	if (isNaN(inch)) {
		inch=0
	}
	if (isNaN(fracnum)) {
		fracnum=0
	}
	if (isNaN(fracden)) {
		fracden=0
	}
	if (fracden==0) {
		ff=0
	}
	else {
		ff=fracnum/fracden
	}
	return ft*12 + inch + ff
}
function km2mile(km) {
	return km*.6214
}
function mile2km(miles) {
	return miles/.6214
}
function acre2sqmi(acres) {
	return acres/640
}
function sqmi2acres(sqmi) {
	return sqmi*640
}
function c2f(c) {
	return (9/5)*c-32
}
function f2c(f) {
	return (5/9)*(f-32)
}
function liter2gal(l) {
	return l*.2642
}
function gal2liter(gal) {
	return gal/.2642
}
function g2oz(g) {
	return g*.0353
}
function oz2g(oz) {
	return oz/.0353
}
function kg2lb(kg) {
	return kg*2.2046
}
function lb2kg(lb) {
	return lb/2.2046
}
function scrollMsg() {
	//i=0 - this variable must be initialized prior to calling the function.
	myMsg="Emotions are not tools of cognition.  --Ayn Rand         "
	frontPart = myMsg.substring(i,myMsg.length)
	backPart = myMsg.substring(0,i)
	window.status=frontPart + backPart
	if (i < myMsg.length) {
		i++
	}
	else {
		i=0
	}
	setTimeout("scrollMsg()",100)
}
function deg2rad(d2rdeg) {
	return (d2rdeg/180)*Math.PI
}
function rad2deg(r2drad) {
	return r2drad*180/Math.PI
}
function inches2feetinchfrac(i2fifarg) {
	decin=i2fifarg
	int=parseInt(decin/12)
	ndp=numberofdecimalplaces(decin)
	dec=round2(decin % 12,ndp)
	frac=decimal2mixedfraction(dec)
	return int+'\' '+frac+'\"'
}
function feet2feetinchfrac(i2fifarg) {
	decin=i2fifarg
	int=parseInt(decin)
	ndp=numberofdecimalplaces(decin)
	dec=round2((decin-int)*12,ndp)
	frac=decimal2mixedfraction(dec)
	return int+'\' '+frac+'\"'
}
function oz2gal(o2goz) {
	return o2goz/128
}
function gal2oz(g2ogal) {
	return g2ogal*128
}