function calcula(valor1, valor2, valor3, valor4, valor5){
	with(document.form_soma){
		var v1 = valor1.value;
		var v2 = valor2.value;
		var v3 = valor3.value;
		v1 = v1.toString().replace(",", ".");
		v2 = v2.toString().replace(",", ".");
		v3 = v3.toString().replace(",", ".");
		if(valor1.value != '' && valor2.value != '' && valor3.value != ''){
			var v4 = parseFloat(((v1/v2)*v3));
			valor4.value = parseFloat(v1-v4).toFixed(2).replace(".",",");
			valor5.value = parseFloat((v1-v4)*30).toFixed(2);
		}
	}
}
var tot=0;
function total(vt1, vt2, vt3, vt4, total){
	if(vt1.value != ''){
		var rvt1 = parseFloat(vt1.value);
		tot=rvt1;
		total.value = tot.toFixed(2).replace(".",",");
	}
	if(vt2.value != ''){
		var rvt2 = parseFloat(vt2.value);
		tot+=rvt2;
		total.value = tot.toFixed(2).replace(".",",");
	}
	if(vt3.value != ''){
		var rvt3 = parseFloat(vt3.value);
		tot+=rvt3;
		total.value = tot.toFixed(2).replace(".",",");
	}
	if(vt4.value != ''){
		var rvt4 = parseFloat(vt4.value);
		tot+=rvt4;
		total.value = tot.toFixed(2).replace(".",",");
	}
}