function calcBalance2() {
    if(document.form1.fpiston.value == "") {
		alert("Please enter front piston (bare) weight in grams")
		document.form1.fpiston.focus()
		return false
	}
    if(document.form1.fpin.value == "") {
		alert("Please enter front piston pin weight in grams")
		document.form1.fpin.focus()
		return false
	}
	if(document.form1.fclip.value == "") {
		alert("Please enter front piston pin clips weight in grams")
		document.form1.fclip.focus()
		return false
	}
	if(document.form1.fbutton.value == "") {
		alert("Please enter front piston buttons weight in grams")
		document.form1.fbutton.focus()
		return false
	}
	if(document.form1.ftopring.value == "") {
		alert("Please enter front piston top ring weight in grams")
		document.form1.ftopring.focus()
		return false
	}
	if(document.form1.f2ring.value == "") {
		alert("Please enter front piston 2nd ring weight in grams")
		document.form1.f2ring.focus()
		return false
	}
	if(document.form1.f3ring.value == "") {
		alert("Please enter front piston 3rd ring  weight in grams")
		document.form1.f3ring.focus()
		return false
	}
	if(document.form1.crankpin.value == "") {
		alert("Please enter crankpin  weight in grams")
		document.form1.crankpin.focus()
		return false
	}
	if(document.form1.nuts.value == "") {
		alert("Please enter crankpin nuts in grams")
		document.form1.nuts.focus()
		return false
	}
	if(document.form1.cages.value == "") {
		alert("Please enter all three bearing cages weight in grams")
		document.form1.cages.focus()
		return false
	}
	if(document.form1.bearings.value == "") {
		alert("Please enter all three sets of loose needle bearings weight in grams")
		document.form1.bearings.focus()
		return false
	}
	if(document.form1.nutlock.value == "") {
		alert("Please enter nutlocks (if any) weight in grams")
		document.form1.nutlock.focus()
		return false
	}
	if(document.form1.fsmall.value == "") {
		alert("Please enter small end front rod (male) weight in grams")
		document.form1.fsmall.focus()
		return false
	}
	if(document.form1.fbig.value == "") {
		alert("Please enter big end front rod (male) weight in grams")
		document.form1.fbig.focus()
		return false
	}
	if(document.form1.frodweight.value == "") {
		alert("Please enter front rod (male) weight in grams")
		document.form1.frodweight.focus()
		return false
	}
	if(document.form1.rsmall.value == "") {
		alert("Please enter rear rod (male) small end weight in grams")
		document.form1.rsmall.focus()
		return false
	}
	if(document.form1.rbig.value == "") {
		alert("Please enter rear rod (male) big end weight in grams")
		document.form1.rbig.focus()
		return false
	}
	if(document.form1.rrodweight.value == "") {
		alert("Please enter rear rod (female) weight in grams")
		document.form1.rrodweight.focus()
		return false
	}
	if(document.form1.dbalance.value == "") {
		alert("Please enter desired balance factor 55 to 65 (typically 60)")
		document.form1.dbalance.focus()
		return false
	}
	if(document.form1.rpiston.value == "") {
		alert("Please enter rear piston (bare) weight in grams")
		document.form1.rpiston.focus()
		return false
	}
	if(document.form1.rpin.value == "") {
		alert("Please enter rear piston pin weight in grams")
		document.form1.rpin.focus()
		return false
	}
	if(document.form1.rclip.value == "") {
		alert("Please enter piston pin clips weight in grams")
		document.form1.rclip.focus()
		return false
	}
	if(document.form1.rbutton.value == "") {
		alert("Please enter buttons (if any) weight in grams")
		document.form1.rbutton.focus()
		return false
	}
	if(document.form1.rtopring.value == "") {
		alert("Please enter rear piston top ring weight in grams")
		document.form1.rtopring.focus()
		return false
	}
	if(document.form1.r2ring.value == "") {
		alert("Please enter rear piston 2nd ring weight in grams")
		document.form1.r2ring.focus()
		return false
	}
	if(document.form1.r3ring.value == "") {
		alert("Please enter rear piston 3rd ring weight in grams")
		document.form1.r3ring.focus()
		return false
	}
	
	
    fpistonx = document.form1.fpiston.value * 1
    fpinx = document.form1.fpin.value * 1
    fclipx = document.form1.fclip.value * 1
    fbuttonx = document.form1.fbutton.value * 1
    ftopringx = document.form1.ftopring.value * 1
    f2ringx = document.form1.f2ring.value * 1
    f3ringx = document.form1.f3ring.value * 1
    crankpinx = document.form1.crankpin.value * 1
    nutsx = document.form1.nuts.value * 1
    cagesx = document.form1.cages.value * 1
    bearingsx = document.form1.bearings.value * 1
    nutlockx = document.form1.nutlock.value * 1
    fsmallx = document.form1.fsmall.value * 1
    fbigx = document.form1.fbig.value * 1
    frodweightx = document.form1.frodweight.value * 1
    rsmallx = document.form1.rsmall.value * 1
    rbigx = document.form1.rbig.value * 1
    rrodweightx = document.form1.rrodweight.value * 1
    dbalancex = document.form1.dbalance.value * 1
    rpistonx = document.form1.rpiston.value *1
    rpinx = document.form1.rpin.value * 1
    rclipx = document.form1.rclip.value * 1
    rbuttonx = document.form1.rbutton.value * 1
    rtopringx = document.form1.rtopring.value *1
    r2ringx = document.form1.r2ring.value * 1
    r3ringx = document.form1.r3ring.value * 1
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
	
    
    
    
    
    
    
    
    
 
    boxx = fpistonx + fpinx + fclipx + fbuttonx + ftopringx + f2ringx + f3ringx
	box1x = rpistonx + rpinx + rclipx + rbuttonx + rtopringx + r2ringx + r3ringx
	box2x = crankpinx + nutsx + cagesx + bearingsx + nutlockx
	box3x = fsmallx + fbigx
	box4x = frodweightx - (fsmallx + fbigx)
	box5x =  fsmallx + (box4x / 3)
	box6x = frodweightx - box5x
	box7x = rsmallx + rbigx
	box8x = rrodweightx - box7x
	box9x = rsmallx + (box8x / 3)
	box10x = rrodweightx - box9x
	box11x = boxx + box1x + box9x + box5x
	box12x = boxx + box5x
	box13x = box1x + box9x
	box14x = box2x + box6x + box10x
	box15x = box15x = (((dbalancex * box11x) / 100) + box14x) / 2
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	tempj = Math.round(boxx * 100)
	tempj1 = Math.round(box1x * 100)
	tempj2 = Math.round(box2x * 100)
	tempj3 = Math.round(box3x * 100)
	tempj4 = Math.round(box4x * 100)
	tempj5 = Math.round(box5x * 100)
	tempj6 = Math.round(box6x * 100)
	tempj7 = Math.round(box7x * 100)
	tempj8 = Math.round(box8x * 100)
	tempj9 = Math.round(box9x * 100)
	tempj10 = Math.round(box10x * 100)
	tempj11 = Math.round(box11x * 100)
	tempj12 = Math.round(box12x * 100)
	tempj13 = Math.round(box13x * 100)
	tempj14 = Math.round(box14x * 100)
	tempj15 = Math.round(box15x * 100)
	
	
	
	
	
	
	
	
	
	
	
	
	
	tempk = tempj * .01
	tempk1 = tempj1 * .01
	tempk2 = tempj2 * .01
	tempk3 = tempj3 * .01
	tempk4 = tempj4 * .01
	tempk5 = tempj5 * .01
	tempk6 = tempj6 * .01
	tempk7 = tempj7 * .01
	tempk8 = tempj8 * .01
	tempk9 = tempj9 * .01
	tempk10 = tempj10 * .01
	tempk11 = tempj11 * .01
	tempk12 = tempj12 * .01
	tempk13 = tempj13 * .01
	tempk14 = tempj14 * .01
	tempk15 = tempj15 * .01
	
	
	
	
	
	
	
	
	
	
	
	daRatio = parseInt(tempk * 100) / 100
	daRatio1 = parseInt(tempk1 * 100) / 100
	daRatio2 = parseInt(tempk2 * 100) / 100
	daRatio3 = parseInt(tempk3 * 100) / 100
	daRatio4 = parseInt(tempk4 * 100) / 100
	daRatio5 = parseInt(tempk5 * 100) / 100
	daRatio6 = parseInt(tempk6 * 100) / 100
	daRatio7 = parseInt(tempk7 * 100) / 100
	daRatio8 = parseInt(tempk8 * 100) / 100
	daRatio9 = parseInt(tempk9 * 100) / 100
	daRatio10 = parseInt(tempk10 * 100) / 100 
	daRatio11 = parseInt(tempk11 * 100) / 100
	daRatio12 = parseInt(tempk12 * 100) / 100
	daRatio13 = parseInt(tempk13 * 100) / 100
	daRatio14 = parseInt(tempk14 * 100) / 100
	daRatio15 = parseInt(tempk15 * 100) / 100
	
	
	
	
	
	
	
	
	
	
	
	
	
	document.form1.box.value = daRatio
	document.form1.box1.value = daRatio1 
	document.form1.box2.value = daRatio2
	document.form1.box3.value = daRatio3
	document.form1.box4.value = daRatio4
	document.form1.box5.value = daRatio5
	document.form1.box6.value = daRatio6
	document.form1.box7.value = daRatio7
	document.form1.box8.value = daRatio8
	document.form1.box9.value = daRatio9
	document.form1.box10.value = daRatio10
	document.form1.box11.value = daRatio11
	document.form1.box12.value = daRatio12 
	document.form1.box13.value = daRatio13
	document.form1.box14.value = daRatio14
	document.form1.box15.value = daRatio15
}