function Convertir (Obj1,Obj2,campo) {
	var un_euro = 166.386;
	if ( campo == 1 ) {
		if ( isNaN(Obj1.value) ) Obj2.value = "Valor invalido";
		else Obj2.value = (Math.round((Obj1.value / un_euro)*100))/100;
	}
	else {
		if ( isNaN(Obj2.value) ) Obj1.value = "Valor invalido";
		else Obj1.value = (Math.round((Obj2.value * un_euro)*100))/100;
	}
}

function KW_amortize(yr,ir,la,at,ai,mp) {
  var mi=ir/1200;var b=1;var mb=1+mi;for(i=0;i<yr*12;i++){b=b*mb}
  var ds=la*mi/(1-(1/b))-(-at-ai)/12;mp.value=Math.floor(ds*Math.pow(10,2))/Math.pow(10,2);
}