function r3onclick() {
	document.forms.K.opt4.checked=false
	document.forms.K.opt5.checked=false
	opt5blur()
}
function r4onclick() {
	document.forms.K.opt3.checked=false
	document.forms.K.opt5.checked=false
	opt5blur()
}
function r5onclick() {
	document.forms.K.opt3.checked=false
	document.forms.K.opt4.checked=false
}

function process(a,b,c,d) {
	ft1=document.forms.K.arg1.value
	if (ft1=='') {
		ft1=0
	}
	in1=document.forms.K.arg2.value
	if (in1=='') {
		in1=0
	}
	nu1=document.forms.K.arg3.value
	if (nu1=='') {
		nu1=0
	}
	de1=document.forms.K.arg4.value
	if (de1=='') {
		de1=0
	}
	ft2=document.forms.K.arg5.value
	if (ft2=='') {
		ft2=0
	}
	in2=document.forms.K.arg6.value
	if (in2=='') {
		in2=0
	}
	nu2=document.forms.K.arg7.value
	if (nu2=='') {
		nu2=0
	}
	de2=document.forms.K.arg8.value
	if (de2=='') {
		de2=0
	}
	ft1=parseInt(ft1)
	in1=parseInt(in1)
	nu1=parseInt(nu1)
	de1=parseInt(de1)
	ft2=parseInt(ft2)
	in2=parseInt(in2)
	nu2=parseInt(nu2)
	de2=parseInt(de2)
	if (nu1==0) {
		arg1=ft1*12+in1
	} else {
		arg1=ft1*12+in1+nu1/de1
	}
	if (nu2==0) {
		arg2=ft2*12+in2
	} else {
		arg2=ft2*12+in2+nu2/de2
	}
	if (document.forms.K.opt3.checked==true) {
		ans=arg1+arg2
	}
	else if (document.forms.K.opt4.checked==true) {
		ans=arg1-arg2
	}
	else {
		ans=arg1/arg2
	}

	document.forms.K.ans1.value=ans
}
function opt5blur() {
//	document.forms.K.arg2.value=""
//	document.forms.K.arg3.value=""
//	document.forms.K.arg4.value=""
}